Finding the Fourth Proportional to 35,496.52, 48,990.90 and 21,157

Step by Step Solution

1. Step 1: Write the proportion equation
   35,496.52 : 48,990.90 = 21,157 : x
2. Step 2: Convert to fraction form
   35,496.52/48,990.90 = 21,157/x
3. Step 3: Cross multiply
   35,496.52x = 48,990.90 × 21,157
4. Step 4: Simplify right side
   35,496.52x = 1,036,500,471.30
5. Step 5: Solve for x
   x = 1,036,500,471.30/35,496.52
6. Step 6: Final answer
   x = 29,200.06