Finding the Fourth Proportional to 15,498.18, 21,380.89 and 9,207.14

Step by Step Solution

1. Step 1: Write the proportion equation
   15,498.18 : 21,380.89 = 9,207.14 : x
2. Step 2: Convert to fraction form
   15,498.18/21,380.89 = 9,207.14/x
3. Step 3: Cross multiply
   15,498.18x = 21,380.89 × 9,207.14
4. Step 4: Simplify right side
   15,498.18x = 196,856,847.55
5. Step 5: Solve for x
   x = 196,856,847.55/15,498.18
6. Step 6: Final answer
   x = 12,701.93