Finding the Fourth Proportional to 6,665.11, 10,003.76 and 3,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665.11 : 10,003.76 = 3,380.47 : x
2. Step 2: Convert to fraction form
   6,665.11/10,003.76 = 3,380.47/x
3. Step 3: Cross multiply
   6,665.11x = 10,003.76 × 3,380.47
4. Step 4: Simplify right side
   6,665.11x = 33,817,410.57
5. Step 5: Solve for x
   x = 33,817,410.57/6,665.11
6. Step 6: Final answer
   x = 5,073.80