Finding the Fourth Proportional to 23,899.10, 32,980.65 and 13,288.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,899.10 : 32,980.65 = 13,288.10 : x
2. Step 2: Convert to fraction form
   23,899.10/32,980.65 = 13,288.10/x
3. Step 3: Cross multiply
   23,899.10x = 32,980.65 × 13,288.10
4. Step 4: Simplify right side
   23,899.10x = 438,250,175.27
5. Step 5: Solve for x
   x = 438,250,175.27/23,899.10
6. Step 6: Final answer
   x = 18,337.52