Finding the Fourth Proportional to 11,164.32, 15,414.48 and 7,390.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,164.32 : 15,414.48 = 7,390.80 : x
2. Step 2: Convert to fraction form
   11,164.32/15,414.48 = 7,390.80/x
3. Step 3: Cross multiply
   11,164.32x = 15,414.48 × 7,390.80
4. Step 4: Simplify right side
   11,164.32x = 113,925,338.78
5. Step 5: Solve for x
   x = 113,925,338.78/11,164.32
6. Step 6: Final answer
   x = 10,204.41