Finding the Fourth Proportional to 10,039.96, 15,073.74 and 5,112.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,039.96 : 15,073.74 = 5,112.92 : x
2. Step 2: Convert to fraction form
   10,039.96/15,073.74 = 5,112.92/x
3. Step 3: Cross multiply
   10,039.96x = 15,073.74 × 5,112.92
4. Step 4: Simplify right side
   10,039.96x = 77,070,826.72
5. Step 5: Solve for x
   x = 77,070,826.72/10,039.96
6. Step 6: Final answer
   x = 7,676.41