Finding the Fourth Proportional to 22,061.49, 30,445.25 and 13,115.85

Step by Step Solution

1. Step 1: Write the proportion equation
   22,061.49 : 30,445.25 = 13,115.85 : x
2. Step 2: Convert to fraction form
   22,061.49/30,445.25 = 13,115.85/x
3. Step 3: Cross multiply
   22,061.49x = 30,445.25 × 13,115.85
4. Step 4: Simplify right side
   22,061.49x = 399,315,266.63
5. Step 5: Solve for x
   x = 399,315,266.63/22,061.49
6. Step 6: Final answer
   x = 18,100.10