Finding the Fourth Proportional to 9,191.57, 12,684.20 and 5,103.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,191.57 : 12,684.20 = 5,103.23 : x
2. Step 2: Convert to fraction form
   9,191.57/12,684.20 = 5,103.23/x
3. Step 3: Cross multiply
   9,191.57x = 12,684.20 × 5,103.23
4. Step 4: Simplify right side
   9,191.57x = 64,730,301.03
5. Step 5: Solve for x
   x = 64,730,301.03/9,191.57
6. Step 6: Final answer
   x = 7,042.36