Finding the Fourth Proportional to 52,765.79, 72,816.90 and 28,567.01

Step by Step Solution

1. Step 1: Write the proportion equation
   52,765.79 : 72,816.90 = 28,567.01 : x
2. Step 2: Convert to fraction form
   52,765.79/72,816.90 = 28,567.01/x
3. Step 3: Cross multiply
   52,765.79x = 72,816.90 × 28,567.01
4. Step 4: Simplify right side
   52,765.79x = 2,080,161,016.82
5. Step 5: Solve for x
   x = 2,080,161,016.82/52,765.79
6. Step 6: Final answer
   x = 39,422.53