Finding the Fourth Proportional to 52,616.12, 72,615.25 and 28,746.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52,616.12 : 72,615.25 = 28,746.38 : x
2. Step 2: Convert to fraction form
   52,616.12/72,615.25 = 28,746.38/x
3. Step 3: Cross multiply
   52,616.12x = 72,615.25 × 28,746.38
4. Step 4: Simplify right side
   52,616.12x = 2,087,425,570.30
5. Step 5: Solve for x
   x = 2,087,425,570.30/52,616.12
6. Step 6: Final answer
   x = 39,672.74