Finding the Fourth Proportional to 28,417.83, 39,216.52 and 16,488.15

Step by Step Solution

1. Step 1: Write the proportion equation
   28,417.83 : 39,216.52 = 16,488.15 : x
2. Step 2: Convert to fraction form
   28,417.83/39,216.52 = 16,488.15/x
3. Step 3: Cross multiply
   28,417.83x = 39,216.52 × 16,488.15
4. Step 4: Simplify right side
   28,417.83x = 646,607,585.71
5. Step 5: Solve for x
   x = 646,607,585.71/28,417.83
6. Step 6: Final answer
   x = 22,753.59