Finding the Fourth Proportional to 10,807.47, 16,205.67 and 4,959

Step by Step Solution

1. Step 1: Write the proportion equation
   10,807.47 : 16,205.67 = 4,959 : x
2. Step 2: Convert to fraction form
   10,807.47/16,205.67 = 4,959/x
3. Step 3: Cross multiply
   10,807.47x = 16,205.67 × 4,959
4. Step 4: Simplify right side
   10,807.47x = 80,363,917.53
5. Step 5: Solve for x
   x = 80,363,917.53/10,807.47
6. Step 6: Final answer
   x = 7,435.96