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Finding the Fourth Proportional to 12,586.05, 18,862.65 and 5,183.06

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Solution

The fourth proportional to 12,586.05, 18,862.65 and 5,183.06 is: 7,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.05 : 18,862.65 = 5,183.06 : x
  2. Step 2: Convert to fraction form
    12,586.05/18,862.65 = 5,183.06/x
  3. Step 3: Cross multiply
    12,586.05x = 18,862.65 × 5,183.06
  4. Step 4: Simplify right side
    12,586.05x = 97,766,152.40
  5. Step 5: Solve for x
    x = 97,766,152.40/12,586.05
  6. Step 6: Final answer
    x = 7,767.82

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