Finding the Fourth Proportional to 11,359.76, 15,684.12 and 7,112.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,359.76 : 15,684.12 = 7,112.48 : x
2. Step 2: Convert to fraction form
   11,359.76/15,684.12 = 7,112.48/x
3. Step 3: Cross multiply
   11,359.76x = 15,684.12 × 7,112.48
4. Step 4: Simplify right side
   11,359.76x = 111,552,989.82
5. Step 5: Solve for x
   x = 111,552,989.82/11,359.76
6. Step 6: Final answer
   x = 9,820.01