Finding the Fourth Proportional to 11,180.56, 15,420.72 and 7,397.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,180.56 : 15,420.72 = 7,397.08 : x
2. Step 2: Convert to fraction form
   11,180.56/15,420.72 = 7,397.08/x
3. Step 3: Cross multiply
   11,180.56x = 15,420.72 × 7,397.08
4. Step 4: Simplify right side
   11,180.56x = 114,068,299.50
5. Step 5: Solve for x
   x = 114,068,299.50/11,180.56
6. Step 6: Final answer
   x = 10,202.38