Finding the Fourth Proportional to 5,145.16, 7,672.55 and 5,098.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.16 : 7,672.55 = 5,098.38 : x
2. Step 2: Convert to fraction form
   5,145.16/7,672.55 = 5,098.38/x
3. Step 3: Cross multiply
   5,145.16x = 7,672.55 × 5,098.38
4. Step 4: Simplify right side
   5,145.16x = 39,117,575.47
5. Step 5: Solve for x
   x = 39,117,575.47/5,145.16
6. Step 6: Final answer
   x = 7,602.79