Finding the Fourth Proportional to 22,165.47, 30,592.31 and 13,213.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,165.47 : 30,592.31 = 13,213.55 : x
2. Step 2: Convert to fraction form
   22,165.47/30,592.31 = 13,213.55/x
3. Step 3: Cross multiply
   22,165.47x = 30,592.31 × 13,213.55
4. Step 4: Simplify right side
   22,165.47x = 404,232,798.77
5. Step 5: Solve for x
   x = 404,232,798.77/22,165.47
6. Step 6: Final answer
   x = 18,237.05