Finding the Fourth Proportional to 52,722.40, 72,756.91 and 28,849.07

Step by Step Solution

1. Step 1: Write the proportion equation
   52,722.40 : 72,756.91 = 28,849.07 : x
2. Step 2: Convert to fraction form
   52,722.40/72,756.91 = 28,849.07/x
3. Step 3: Cross multiply
   52,722.40x = 72,756.91 × 28,849.07
4. Step 4: Simplify right side
   52,722.40x = 2,098,969,045.33
5. Step 5: Solve for x
   x = 2,098,969,045.33/52,722.40
6. Step 6: Final answer
   x = 39,811.72