Finding the Fourth Proportional to 10,335.88, 15,484.38 and 5,145.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,335.88 : 15,484.38 = 5,145.40 : x
2. Step 2: Convert to fraction form
   10,335.88/15,484.38 = 5,145.40/x
3. Step 3: Cross multiply
   10,335.88x = 15,484.38 × 5,145.40
4. Step 4: Simplify right side
   10,335.88x = 79,673,328.85
5. Step 5: Solve for x
   x = 79,673,328.85/10,335.88
6. Step 6: Final answer
   x = 7,708.42