Finding the Fourth Proportional to 7,109.47, 9,789.55 and 5,612.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.47 : 9,789.55 = 5,612.59 : x
2. Step 2: Convert to fraction form
   7,109.47/9,789.55 = 5,612.59/x
3. Step 3: Cross multiply
   7,109.47x = 9,789.55 × 5,612.59
4. Step 4: Simplify right side
   7,109.47x = 54,944,730.43
5. Step 5: Solve for x
   x = 54,944,730.43/7,109.47
6. Step 6: Final answer
   x = 7,728.39