Finding the Fourth Proportional to 11,760.05, 16,219.35 and 10,340.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,760.05 : 16,219.35 = 10,340.78 : x
2. Step 2: Convert to fraction form
   11,760.05/16,219.35 = 10,340.78/x
3. Step 3: Cross multiply
   11,760.05x = 16,219.35 × 10,340.78
4. Step 4: Simplify right side
   11,760.05x = 167,720,649.00
5. Step 5: Solve for x
   x = 167,720,649.00/11,760.05
6. Step 6: Final answer
   x = 14,261.91