Finding the Fourth Proportional to 5,470.02, 7,548.55 and 3,112.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,470.02 : 7,548.55 = 3,112.15 : x
2. Step 2: Convert to fraction form
   5,470.02/7,548.55 = 3,112.15/x
3. Step 3: Cross multiply
   5,470.02x = 7,548.55 × 3,112.15
4. Step 4: Simplify right side
   5,470.02x = 23,492,219.88
5. Step 5: Solve for x
   x = 23,492,219.88/5,470.02
6. Step 6: Final answer
   x = 4,294.72