Finding the Fourth Proportional to 21,619,805.98, 29,834,441.21 and 12,922,773.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,619,805.98 : 29,834,441.21 = 12,922,773.62 : x
2. Step 2: Convert to fraction form
   21,619,805.98/29,834,441.21 = 12,922,773.62/x
3. Step 3: Cross multiply
   21,619,805.98x = 29,834,441.21 × 12,922,773.62
4. Step 4: Simplify right side
   21,619,805.98x = 385,543,729,836,028.88
5. Step 5: Solve for x
   x = 385,543,729,836,028.88/21,619,805.98
6. Step 6: Final answer
   x = 17,832,894.99