Finding the Fourth Proportional to 7,191.79, 10,785.56 and 3,240.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,191.79 : 10,785.56 = 3,240.76 : x
2. Step 2: Convert to fraction form
   7,191.79/10,785.56 = 3,240.76/x
3. Step 3: Cross multiply
   7,191.79x = 10,785.56 × 3,240.76
4. Step 4: Simplify right side
   7,191.79x = 34,953,388.48
5. Step 5: Solve for x
   x = 34,953,388.48/7,191.79
6. Step 6: Final answer
   x = 4,860.18