Finding the Fourth Proportional to 9,192.30, 12,683.17 and 5,415.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,192.30 : 12,683.17 = 5,415.18 : x
2. Step 2: Convert to fraction form
   9,192.30/12,683.17 = 5,415.18/x
3. Step 3: Cross multiply
   9,192.30x = 12,683.17 × 5,415.18
4. Step 4: Simplify right side
   9,192.30x = 68,681,648.52
5. Step 5: Solve for x
   x = 68,681,648.52/9,192.30
6. Step 6: Final answer
   x = 7,471.65