Finding the Fourth Proportional to 10,342.59, 15,516.32 and 2,947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.59 : 15,516.32 = 2,947.15 : x
2. Step 2: Convert to fraction form
   10,342.59/15,516.32 = 2,947.15/x
3. Step 3: Cross multiply
   10,342.59x = 15,516.32 × 2,947.15
4. Step 4: Simplify right side
   10,342.59x = 45,728,927.15
5. Step 5: Solve for x
   x = 45,728,927.15/10,342.59
6. Step 6: Final answer
   x = 4,421.42