Finding the Fourth Proportional to 12,915,727, 17,820,156.06 and 8,991,084.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,915,727 : 17,820,156.06 = 8,991,084.76 : x
2. Step 2: Convert to fraction form
   12,915,727/17,820,156.06 = 8,991,084.76/x
3. Step 3: Cross multiply
   12,915,727x = 17,820,156.06 × 8,991,084.76
4. Step 4: Simplify right side
   12,915,727x = 160,222,533,571,887.62
5. Step 5: Solve for x
   x = 160,222,533,571,887.62/12,915,727
6. Step 6: Final answer
   x = 12,405,227.64