Finding the Fourth Proportional to 9,153.48, 12,631.67 and 5,174.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.48 : 12,631.67 = 5,174.46 : x
2. Step 2: Convert to fraction form
   9,153.48/12,631.67 = 5,174.46/x
3. Step 3: Cross multiply
   9,153.48x = 12,631.67 × 5,174.46
4. Step 4: Simplify right side
   9,153.48x = 65,362,071.15
5. Step 5: Solve for x
   x = 65,362,071.15/9,153.48
6. Step 6: Final answer
   x = 7,140.68