Finding the Fourth Proportional to 23,890.16, 32,969.52 and 13,280.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,890.16 : 32,969.52 = 13,280.88 : x
2. Step 2: Convert to fraction form
   23,890.16/32,969.52 = 13,280.88/x
3. Step 3: Cross multiply
   23,890.16x = 32,969.52 × 13,280.88
4. Step 4: Simplify right side
   23,890.16x = 437,864,238.78
5. Step 5: Solve for x
   x = 437,864,238.78/23,890.16
6. Step 6: Final answer
   x = 18,328.23