Finding the Fourth Proportional to 51,002.24, 70,382.72 and 28,646.40

Step by Step Solution

1. Step 1: Write the proportion equation
   51,002.24 : 70,382.72 = 28,646.40 : x
2. Step 2: Convert to fraction form
   51,002.24/70,382.72 = 28,646.40/x
3. Step 3: Cross multiply
   51,002.24x = 70,382.72 × 28,646.40
4. Step 4: Simplify right side
   51,002.24x = 2,016,211,550.21
5. Step 5: Solve for x
   x = 2,016,211,550.21/51,002.24
6. Step 6: Final answer
   x = 39,531.82