Finding the Fourth Proportional to 35,772.72, 49,368.69 and 20,666.02

Step by Step Solution

1. Step 1: Write the proportion equation
   35,772.72 : 49,368.69 = 20,666.02 : x
2. Step 2: Convert to fraction form
   35,772.72/49,368.69 = 20,666.02/x
3. Step 3: Cross multiply
   35,772.72x = 49,368.69 × 20,666.02
4. Step 4: Simplify right side
   35,772.72x = 1,020,254,304.06
5. Step 5: Solve for x
   x = 1,020,254,304.06/35,772.72
6. Step 6: Final answer
   x = 28,520.45