Finding the Fourth Proportional to 9,112.68, 12,573.18 and 5,574.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.68 : 12,573.18 = 5,574.60 : x
2. Step 2: Convert to fraction form
   9,112.68/12,573.18 = 5,574.60/x
3. Step 3: Cross multiply
   9,112.68x = 12,573.18 × 5,574.60
4. Step 4: Simplify right side
   9,112.68x = 70,090,449.23
5. Step 5: Solve for x
   x = 70,090,449.23/9,112.68
6. Step 6: Final answer
   x = 7,691.53