Finding the Fourth Proportional to 23,581.68, 32,535 and 13,511.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,581.68 : 32,535 = 13,511.28 : x
2. Step 2: Convert to fraction form
   23,581.68/32,535 = 13,511.28/x
3. Step 3: Cross multiply
   23,581.68x = 32,535 × 13,511.28
4. Step 4: Simplify right side
   23,581.68x = 439,589,494.80
5. Step 5: Solve for x
   x = 439,589,494.80/23,581.68
6. Step 6: Final answer
   x = 18,641.14