Finding the Fourth Proportional to 9,174.59, 12,662.34 and 7,400.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174.59 : 12,662.34 = 7,400.69 : x
2. Step 2: Convert to fraction form
   9,174.59/12,662.34 = 7,400.69/x
3. Step 3: Cross multiply
   9,174.59x = 12,662.34 × 7,400.69
4. Step 4: Simplify right side
   9,174.59x = 93,710,053.01
5. Step 5: Solve for x
   x = 93,710,053.01/9,174.59
6. Step 6: Final answer
   x = 10,214.09