Finding the Fourth Proportional to 10,335.78, 15,505.12 and 3,314.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,335.78 : 15,505.12 = 3,314.15 : x
2. Step 2: Convert to fraction form
   10,335.78/15,505.12 = 3,314.15/x
3. Step 3: Cross multiply
   10,335.78x = 15,505.12 × 3,314.15
4. Step 4: Simplify right side
   10,335.78x = 51,386,293.45
5. Step 5: Solve for x
   x = 51,386,293.45/10,335.78
6. Step 6: Final answer
   x = 4,971.69