Finding the Fourth Proportional to 20,520.34, 30,785.99 and 7,372.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,520.34 : 30,785.99 = 7,372.82 : x
2. Step 2: Convert to fraction form
   20,520.34/30,785.99 = 7,372.82/x
3. Step 3: Cross multiply
   20,520.34x = 30,785.99 × 7,372.82
4. Step 4: Simplify right side
   20,520.34x = 226,979,602.89
5. Step 5: Solve for x
   x = 226,979,602.89/20,520.34
6. Step 6: Final answer
   x = 11,061.20