Finding the Fourth Proportional to 7,918.68, 11,880.78 and 3,535.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,918.68 : 11,880.78 = 3,535.72 : x
2. Step 2: Convert to fraction form
   7,918.68/11,880.78 = 3,535.72/x
3. Step 3: Cross multiply
   7,918.68x = 11,880.78 × 3,535.72
4. Step 4: Simplify right side
   7,918.68x = 42,007,111.46
5. Step 5: Solve for x
   x = 42,007,111.46/7,918.68
6. Step 6: Final answer
   x = 5,304.81