Finding the Fourth Proportional to 10,956.51, 15,121.37 and 7,182.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.51 : 15,121.37 = 7,182.86 : x
2. Step 2: Convert to fraction form
   10,956.51/15,121.37 = 7,182.86/x
3. Step 3: Cross multiply
   10,956.51x = 15,121.37 × 7,182.86
4. Step 4: Simplify right side
   10,956.51x = 108,614,626.07
5. Step 5: Solve for x
   x = 108,614,626.07/10,956.51
6. Step 6: Final answer
   x = 9,913.25