Finding the Fourth Proportional to 11,179.58, 15,428.74 and 7,208.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,179.58 : 15,428.74 = 7,208.96 : x
2. Step 2: Convert to fraction form
   11,179.58/15,428.74 = 7,208.96/x
3. Step 3: Cross multiply
   11,179.58x = 15,428.74 × 7,208.96
4. Step 4: Simplify right side
   11,179.58x = 111,225,169.51
5. Step 5: Solve for x
   x = 111,225,169.51/11,179.58
6. Step 6: Final answer
   x = 9,948.96