Finding the Fourth Proportional to 35,113.34, 52,664.83 and 12,921.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,113.34 : 52,664.83 = 12,921.56 : x
2. Step 2: Convert to fraction form
   35,113.34/52,664.83 = 12,921.56/x
3. Step 3: Cross multiply
   35,113.34x = 52,664.83 × 12,921.56
4. Step 4: Simplify right side
   35,113.34x = 680,511,760.73
5. Step 5: Solve for x
   x = 680,511,760.73/35,113.34
6. Step 6: Final answer
   x = 19,380.43