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Finding the Fourth Proportional to 8,647.37, 12,972.95 and 2,804.57

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Solution

The fourth proportional to 8,647.37, 12,972.95 and 2,804.57 is: 4,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.37 : 12,972.95 = 2,804.57 : x
  2. Step 2: Convert to fraction form
    8,647.37/12,972.95 = 2,804.57/x
  3. Step 3: Cross multiply
    8,647.37x = 12,972.95 × 2,804.57
  4. Step 4: Simplify right side
    8,647.37x = 36,383,546.38
  5. Step 5: Solve for x
    x = 36,383,546.38/8,647.37
  6. Step 6: Final answer
    x = 4,207.47

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