Finding the Fourth Proportional to 12,002,186.72, 18,003,860.04 and 3,915,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002,186.72 : 18,003,860.04 = 3,915,146.72 : x
2. Step 2: Convert to fraction form
   12,002,186.72/18,003,860.04 = 3,915,146.72/x
3. Step 3: Cross multiply
   12,002,186.72x = 18,003,860.04 × 3,915,146.72
4. Step 4: Simplify right side
   12,002,186.72x = 70,487,753,582,945.06
5. Step 5: Solve for x
   x = 70,487,753,582,945.06/12,002,186.72
6. Step 6: Final answer
   x = 5,872,909.26