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Finding the Fourth Proportional to 8,603.69, 12,905.55 and 2,760.77

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Solution

The fourth proportional to 8,603.69, 12,905.55 and 2,760.77 is: 4,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.69 : 12,905.55 = 2,760.77 : x
  2. Step 2: Convert to fraction form
    8,603.69/12,905.55 = 2,760.77/x
  3. Step 3: Cross multiply
    8,603.69x = 12,905.55 × 2,760.77
  4. Step 4: Simplify right side
    8,603.69x = 35,629,255.27
  5. Step 5: Solve for x
    x = 35,629,255.27/8,603.69
  6. Step 6: Final answer
    x = 4,141.16

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