Finding the Fourth Proportional to 22,397,117.21, 30,891,520.15 and 16,890,724.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,397,117.21 : 30,891,520.15 = 16,890,724.15 : x
2. Step 2: Convert to fraction form
   22,397,117.21/30,891,520.15 = 16,890,724.15/x
3. Step 3: Cross multiply
   22,397,117.21x = 30,891,520.15 × 16,890,724.15
4. Step 4: Simplify right side
   22,397,117.21x = 521,780,145,427,816.56
5. Step 5: Solve for x
   x = 521,780,145,427,816.56/22,397,117.21
6. Step 6: Final answer
   x = 23,296,754.69