Finding the Fourth Proportional to 21,619,807.98, 29,834,443.98 and 12,922,775.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,619,807.98 : 29,834,443.98 = 12,922,775.61 : x
2. Step 2: Convert to fraction form
   21,619,807.98/29,834,443.98 = 12,922,775.61/x
3. Step 3: Cross multiply
   21,619,807.98x = 29,834,443.98 × 12,922,775.61
4. Step 4: Simplify right side
   21,619,807.98x = 385,543,825,002,655.31
5. Step 5: Solve for x
   x = 385,543,825,002,655.31/21,619,807.98
6. Step 6: Final answer
   x = 17,832,897.75