Finding the Fourth Proportional to 7,470.05, 10,308.69 and 4,112.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,470.05 : 10,308.69 = 4,112.78 : x
2. Step 2: Convert to fraction form
   7,470.05/10,308.69 = 4,112.78/x
3. Step 3: Cross multiply
   7,470.05x = 10,308.69 × 4,112.78
4. Step 4: Simplify right side
   7,470.05x = 42,397,322.51
5. Step 5: Solve for x
   x = 42,397,322.51/7,470.05
6. Step 6: Final answer
   x = 5,675.64