Finding the Fourth Proportional to 7,308.54, 10,085.91 and 4,164.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,308.54 : 10,085.91 = 4,164.78 : x
2. Step 2: Convert to fraction form
   7,308.54/10,085.91 = 4,164.78/x
3. Step 3: Cross multiply
   7,308.54x = 10,085.91 × 4,164.78
4. Step 4: Simplify right side
   7,308.54x = 42,005,596.25
5. Step 5: Solve for x
   x = 42,005,596.25/7,308.54
6. Step 6: Final answer
   x = 5,747.47