Finding the Fourth Proportional to 22,191,709.29, 30,625,504.61 and 12,402,153.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,191,709.29 : 30,625,504.61 = 12,402,153.20 : x
2. Step 2: Convert to fraction form
   22,191,709.29/30,625,504.61 = 12,402,153.20/x
3. Step 3: Cross multiply
   22,191,709.29x = 30,625,504.61 × 12,402,153.20
4. Step 4: Simplify right side
   22,191,709.29x = 379,822,199,785,388
5. Step 5: Solve for x
   x = 379,822,199,785,388/22,191,709.29
6. Step 6: Final answer
   x = 17,115,499.97