Finding the Fourth Proportional to 10,326.15, 15,490.86 and 5,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,326.15 : 15,490.86 = 5,061.57 : x
2. Step 2: Convert to fraction form
   10,326.15/15,490.86 = 5,061.57/x
3. Step 3: Cross multiply
   10,326.15x = 15,490.86 × 5,061.57
4. Step 4: Simplify right side
   10,326.15x = 78,408,072.25
5. Step 5: Solve for x
   x = 78,408,072.25/10,326.15
6. Step 6: Final answer
   x = 7,593.16