Finding the Fourth Proportional to 410,507.22, 566,891.24 and 388,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   410,507.22 : 566,891.24 = 388,142.72 : x
2. Step 2: Convert to fraction form
   410,507.22/566,891.24 = 388,142.72/x
3. Step 3: Cross multiply
   410,507.22x = 566,891.24 × 388,142.72
4. Step 4: Simplify right side
   410,507.22x = 220,034,705,003.32
5. Step 5: Solve for x
   x = 220,034,705,003.32/410,507.22
6. Step 6: Final answer
   x = 536,006.91