Finding the Fourth Proportional to 52,603.40, 72,591.53 and 28,730.16

Step by Step Solution

1. Step 1: Write the proportion equation
   52,603.40 : 72,591.53 = 28,730.16 : x
2. Step 2: Convert to fraction form
   52,603.40/72,591.53 = 28,730.16/x
3. Step 3: Cross multiply
   52,603.40x = 72,591.53 × 28,730.16
4. Step 4: Simplify right side
   52,603.40x = 2,085,566,127.89
5. Step 5: Solve for x
   x = 2,085,566,127.89/52,603.40
6. Step 6: Final answer
   x = 39,646.98