Finding the Fourth Proportional to 7,447.98, 10,278.18 and 4,090.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,447.98 : 10,278.18 = 4,090.71 : x
2. Step 2: Convert to fraction form
   7,447.98/10,278.18 = 4,090.71/x
3. Step 3: Cross multiply
   7,447.98x = 10,278.18 × 4,090.71
4. Step 4: Simplify right side
   7,447.98x = 42,045,053.71
5. Step 5: Solve for x
   x = 42,045,053.71/7,447.98
6. Step 6: Final answer
   x = 5,645.16