Finding the Fourth Proportional to 10,390.26, 15,587.72 and 4,840.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.26 : 15,587.72 = 4,840.75 : x
2. Step 2: Convert to fraction form
   10,390.26/15,587.72 = 4,840.75/x
3. Step 3: Cross multiply
   10,390.26x = 15,587.72 × 4,840.75
4. Step 4: Simplify right side
   10,390.26x = 75,456,255.59
5. Step 5: Solve for x
   x = 75,456,255.59/10,390.26
6. Step 6: Final answer
   x = 7,262.21