Finding the Fourth Proportional to 23,561.88, 32,515.46 and 13,490.47

Step by Step Solution

1. Step 1: Write the proportion equation
   23,561.88 : 32,515.46 = 13,490.47 : x
2. Step 2: Convert to fraction form
   23,561.88/32,515.46 = 13,490.47/x
3. Step 3: Cross multiply
   23,561.88x = 32,515.46 × 13,490.47
4. Step 4: Simplify right side
   23,561.88x = 438,648,837.67
5. Step 5: Solve for x
   x = 438,648,837.67/23,561.88
6. Step 6: Final answer
   x = 18,616.89