Finding the Fourth Proportional to 20,730.96, 31,099.56 and 7,402.92

Step by Step Solution

1. Step 1: Write the proportion equation
   20,730.96 : 31,099.56 = 7,402.92 : x
2. Step 2: Convert to fraction form
   20,730.96/31,099.56 = 7,402.92/x
3. Step 3: Cross multiply
   20,730.96x = 31,099.56 × 7,402.92
4. Step 4: Simplify right side
   20,730.96x = 230,227,554.72
5. Step 5: Solve for x
   x = 230,227,554.72/20,730.96
6. Step 6: Final answer
   x = 11,105.49