Finding the Fourth Proportional to 52,864.50, 72,952.50 and 28,991.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,864.50 : 72,952.50 = 28,991.10 : x
2. Step 2: Convert to fraction form
   52,864.50/72,952.50 = 28,991.10/x
3. Step 3: Cross multiply
   52,864.50x = 72,952.50 × 28,991.10
4. Step 4: Simplify right side
   52,864.50x = 2,114,973,222.75
5. Step 5: Solve for x
   x = 2,114,973,222.75/52,864.50
6. Step 6: Final answer
   x = 40,007.44