Finding the Fourth Proportional to 28,549.16, 42,833.88 and 12,752.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,549.16 : 42,833.88 = 12,752.72 : x
2. Step 2: Convert to fraction form
   28,549.16/42,833.88 = 12,752.72/x
3. Step 3: Cross multiply
   28,549.16x = 42,833.88 × 12,752.72
4. Step 4: Simplify right side
   28,549.16x = 546,248,478.15
5. Step 5: Solve for x
   x = 546,248,478.15/28,549.16
6. Step 6: Final answer
   x = 19,133.61