Finding the Fourth Proportional to 52,338, 72,225.12 and 28,464.16

Step by Step Solution

1. Step 1: Write the proportion equation
   52,338 : 72,225.12 = 28,464.16 : x
2. Step 2: Convert to fraction form
   52,338/72,225.12 = 28,464.16/x
3. Step 3: Cross multiply
   52,338x = 72,225.12 × 28,464.16
4. Step 4: Simplify right side
   52,338x = 2,055,827,371.70
5. Step 5: Solve for x
   x = 2,055,827,371.70/52,338
6. Step 6: Final answer
   x = 39,279.82