Finding the Fourth Proportional to 23,086.74, 31,859.89 and 13,524.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,086.74 : 31,859.89 = 13,524.50 : x
2. Step 2: Convert to fraction form
   23,086.74/31,859.89 = 13,524.50/x
3. Step 3: Cross multiply
   23,086.74x = 31,859.89 × 13,524.50
4. Step 4: Simplify right side
   23,086.74x = 430,889,082.31
5. Step 5: Solve for x
   x = 430,889,082.31/23,086.74
6. Step 6: Final answer
   x = 18,663.92