Finding the Fourth Proportional to 10,951.76, 16,437.40 and 5,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.76 : 16,437.40 = 5,111.68 : x
2. Step 2: Convert to fraction form
   10,951.76/16,437.40 = 5,111.68/x
3. Step 3: Cross multiply
   10,951.76x = 16,437.40 × 5,111.68
4. Step 4: Simplify right side
   10,951.76x = 84,022,728.83
5. Step 5: Solve for x
   x = 84,022,728.83/10,951.76
6. Step 6: Final answer
   x = 7,672.08