Finding the Fourth Proportional to 23,899.25, 32,980.75 and 13,288.79

Step by Step Solution

1. Step 1: Write the proportion equation
   23,899.25 : 32,980.75 = 13,288.79 : x
2. Step 2: Convert to fraction form
   23,899.25/32,980.75 = 13,288.79/x
3. Step 3: Cross multiply
   23,899.25x = 32,980.75 × 13,288.79
4. Step 4: Simplify right side
   23,899.25x = 438,274,095.89
5. Step 5: Solve for x
   x = 438,274,095.89/23,899.25
6. Step 6: Final answer
   x = 18,338.41