Finding the Fourth Proportional to 22,265.62, 30,731.61 and 13,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,265.62 : 30,731.61 = 13,880.50 : x
2. Step 2: Convert to fraction form
   22,265.62/30,731.61 = 13,880.50/x
3. Step 3: Cross multiply
   22,265.62x = 30,731.61 × 13,880.50
4. Step 4: Simplify right side
   22,265.62x = 426,570,112.61
5. Step 5: Solve for x
   x = 426,570,112.61/22,265.62
6. Step 6: Final answer
   x = 19,158.24