Finding the Fourth Proportional to 28,665.06, 42,986.52 and 11,132.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,665.06 : 42,986.52 = 11,132.52 : x
2. Step 2: Convert to fraction form
   28,665.06/42,986.52 = 11,132.52/x
3. Step 3: Cross multiply
   28,665.06x = 42,986.52 × 11,132.52
4. Step 4: Simplify right side
   28,665.06x = 478,548,293.63
5. Step 5: Solve for x
   x = 478,548,293.63/28,665.06
6. Step 6: Final answer
   x = 16,694.48