Finding the Fourth Proportional to 22,573.02, 31,144.59 and 13,140.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,573.02 : 31,144.59 = 13,140.30 : x
2. Step 2: Convert to fraction form
   22,573.02/31,144.59 = 13,140.30/x
3. Step 3: Cross multiply
   22,573.02x = 31,144.59 × 13,140.30
4. Step 4: Simplify right side
   22,573.02x = 409,249,255.98
5. Step 5: Solve for x
   x = 409,249,255.98/22,573.02
6. Step 6: Final answer
   x = 18,130.02