Finding the Fourth Proportional to 52,839.54, 72,920.25 and 28,966.01

Step by Step Solution

1. Step 1: Write the proportion equation
   52,839.54 : 72,920.25 = 28,966.01 : x
2. Step 2: Convert to fraction form
   52,839.54/72,920.25 = 28,966.01/x
3. Step 3: Cross multiply
   52,839.54x = 72,920.25 × 28,966.01
4. Step 4: Simplify right side
   52,839.54x = 2,112,208,326.10
5. Step 5: Solve for x
   x = 2,112,208,326.10/52,839.54
6. Step 6: Final answer
   x = 39,974.01