Finding the Fourth Proportional to 22,697.42, 31,322.90 and 13,137.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,697.42 : 31,322.90 = 13,137.59 : x
2. Step 2: Convert to fraction form
   22,697.42/31,322.90 = 13,137.59/x
3. Step 3: Cross multiply
   22,697.42x = 31,322.90 × 13,137.59
4. Step 4: Simplify right side
   22,697.42x = 411,507,528.96
5. Step 5: Solve for x
   x = 411,507,528.96/22,697.42
6. Step 6: Final answer
   x = 18,130.15