Finding the Fourth Proportional to 22,131.42, 30,535.90 and 13,522.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,131.42 : 30,535.90 = 13,522.11 : x
2. Step 2: Convert to fraction form
   22,131.42/30,535.90 = 13,522.11/x
3. Step 3: Cross multiply
   22,131.42x = 30,535.90 × 13,522.11
4. Step 4: Simplify right side
   22,131.42x = 412,909,798.75
5. Step 5: Solve for x
   x = 412,909,798.75/22,131.42
6. Step 6: Final answer
   x = 18,657.18