Finding the Fourth Proportional to 22,337.55, 30,825.86 and 12,906.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,337.55 : 30,825.86 = 12,906.12 : x
2. Step 2: Convert to fraction form
   22,337.55/30,825.86 = 12,906.12/x
3. Step 3: Cross multiply
   22,337.55x = 30,825.86 × 12,906.12
4. Step 4: Simplify right side
   22,337.55x = 397,842,248.26
5. Step 5: Solve for x
   x = 397,842,248.26/22,337.55
6. Step 6: Final answer
   x = 17,810.47