Finding the Fourth Proportional to 11,150.08, 15,397.53 and 7,178.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.08 : 15,397.53 = 7,178.10 : x
2. Step 2: Convert to fraction form
   11,150.08/15,397.53 = 7,178.10/x
3. Step 3: Cross multiply
   11,150.08x = 15,397.53 × 7,178.10
4. Step 4: Simplify right side
   11,150.08x = 110,525,010.09
5. Step 5: Solve for x
   x = 110,525,010.09/11,150.08
6. Step 6: Final answer
   x = 9,912.49