Finding the Fourth Proportional to 28,314.10, 42,476.27 and 11,664.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,314.10 : 42,476.27 = 11,664.88 : x
2. Step 2: Convert to fraction form
   28,314.10/42,476.27 = 11,664.88/x
3. Step 3: Cross multiply
   28,314.10x = 42,476.27 × 11,664.88
4. Step 4: Simplify right side
   28,314.10x = 495,480,380.02
5. Step 5: Solve for x
   x = 495,480,380.02/28,314.10
6. Step 6: Final answer
   x = 17,499.42