Finding the Fourth Proportional to 10,934.22, 15,071.76 and 7,391.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,934.22 : 15,071.76 = 7,391.28 : x
2. Step 2: Convert to fraction form
   10,934.22/15,071.76 = 7,391.28/x
3. Step 3: Cross multiply
   10,934.22x = 15,071.76 × 7,391.28
4. Step 4: Simplify right side
   10,934.22x = 111,399,598.25
5. Step 5: Solve for x
   x = 111,399,598.25/10,934.22
6. Step 6: Final answer
   x = 10,188.16