Finding the Fourth Proportional to 35,810.72, 49,410.84 and 21,663.28

Step by Step Solution

1. Step 1: Write the proportion equation
   35,810.72 : 49,410.84 = 21,663.28 : x
2. Step 2: Convert to fraction form
   35,810.72/49,410.84 = 21,663.28/x
3. Step 3: Cross multiply
   35,810.72x = 49,410.84 × 21,663.28
4. Step 4: Simplify right side
   35,810.72x = 1,070,400,861.96
5. Step 5: Solve for x
   x = 1,070,400,861.96/35,810.72
6. Step 6: Final answer
   x = 29,890.51