Finding the Fourth Proportional to 35,772.77, 49,368.72 and 20,666.07

Step by Step Solution

1. Step 1: Write the proportion equation
   35,772.77 : 49,368.72 = 20,666.07 : x
2. Step 2: Convert to fraction form
   35,772.77/49,368.72 = 20,666.07/x
3. Step 3: Cross multiply
   35,772.77x = 49,368.72 × 20,666.07
4. Step 4: Simplify right side
   35,772.77x = 1,020,257,500.83
5. Step 5: Solve for x
   x = 1,020,257,500.83/35,772.77
6. Step 6: Final answer
   x = 28,520.50