Finding the Fourth Proportional to 9,078.78, 13,613.04 and 3,152.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.78 : 13,613.04 = 3,152.94 : x
2. Step 2: Convert to fraction form
   9,078.78/13,613.04 = 3,152.94/x
3. Step 3: Cross multiply
   9,078.78x = 13,613.04 × 3,152.94
4. Step 4: Simplify right side
   9,078.78x = 42,921,098.34
5. Step 5: Solve for x
   x = 42,921,098.34/9,078.78
6. Step 6: Final answer
   x = 4,727.63