Finding the Fourth Proportional to 9,153.22, 12,631.40 and 5,174.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.22 : 12,631.40 = 5,174.34 : x
2. Step 2: Convert to fraction form
   9,153.22/12,631.40 = 5,174.34/x
3. Step 3: Cross multiply
   9,153.22x = 12,631.40 × 5,174.34
4. Step 4: Simplify right side
   9,153.22x = 65,359,158.28
5. Step 5: Solve for x
   x = 65,359,158.28/9,153.22
6. Step 6: Final answer
   x = 7,140.56