Finding the Fourth Proportional to 11,358.76, 15,682.74 and 7,111.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,358.76 : 15,682.74 = 7,111.48 : x
2. Step 2: Convert to fraction form
   11,358.76/15,682.74 = 7,111.48/x
3. Step 3: Cross multiply
   11,358.76x = 15,682.74 × 7,111.48
4. Step 4: Simplify right side
   11,358.76x = 111,527,491.86
5. Step 5: Solve for x
   x = 111,527,491.86/11,358.76
6. Step 6: Final answer
   x = 9,818.63