Finding the Fourth Proportional to 21,116,982.72, 29,141,436.15 and 11,459,190.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,116,982.72 : 29,141,436.15 = 11,459,190.72 : x
2. Step 2: Convert to fraction form
   21,116,982.72/29,141,436.15 = 11,459,190.72/x
3. Step 3: Cross multiply
   21,116,982.72x = 29,141,436.15 × 11,459,190.72
4. Step 4: Simplify right side
   21,116,982.72x = 333,937,274,697,552.50
5. Step 5: Solve for x
   x = 333,937,274,697,552.50/21,116,982.72
6. Step 6: Final answer
   x = 15,813,683.19