Finding the Fourth Proportional to 23,899.12, 32,980.66 and 13,288.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,899.12 : 32,980.66 = 13,288.12 : x
2. Step 2: Convert to fraction form
   23,899.12/32,980.66 = 13,288.12/x
3. Step 3: Cross multiply
   23,899.12x = 32,980.66 × 13,288.12
4. Step 4: Simplify right side
   23,899.12x = 438,250,967.76
5. Step 5: Solve for x
   x = 438,250,967.76/23,899.12
6. Step 6: Final answer
   x = 18,337.54