Finding the Fourth Proportional to 11,179.56, 15,428.72 and 7,208.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,179.56 : 15,428.72 = 7,208.96 : x
2. Step 2: Convert to fraction form
   11,179.56/15,428.72 = 7,208.96/x
3. Step 3: Cross multiply
   11,179.56x = 15,428.72 × 7,208.96
4. Step 4: Simplify right side
   11,179.56x = 111,225,025.33
5. Step 5: Solve for x
   x = 111,225,025.33/11,179.56
6. Step 6: Final answer
   x = 9,948.96