Finding the Fourth Proportional to 9,342.90, 12,875.94 and 7,922.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,342.90 : 12,875.94 = 7,922.04 : x
2. Step 2: Convert to fraction form
   9,342.90/12,875.94 = 7,922.04/x
3. Step 3: Cross multiply
   9,342.90x = 12,875.94 × 7,922.04
4. Step 4: Simplify right side
   9,342.90x = 102,003,711.72
5. Step 5: Solve for x
   x = 102,003,711.72/9,342.90
6. Step 6: Final answer
   x = 10,917.78