Finding the Fourth Proportional to 7,806.24, 11,646.72 and 7,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,806.24 : 11,646.72 = 7,434.72 : x
2. Step 2: Convert to fraction form
   7,806.24/11,646.72 = 7,434.72/x
3. Step 3: Cross multiply
   7,806.24x = 11,646.72 × 7,434.72
4. Step 4: Simplify right side
   7,806.24x = 86,590,102.12
5. Step 5: Solve for x
   x = 86,590,102.12/7,806.24
6. Step 6: Final answer
   x = 11,092.42