Finding the Fourth Proportional to 10,420.88, 15,610.38 and 4,866.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,420.88 : 15,610.38 = 4,866.56 : x
2. Step 2: Convert to fraction form
   10,420.88/15,610.38 = 4,866.56/x
3. Step 3: Cross multiply
   10,420.88x = 15,610.38 × 4,866.56
4. Step 4: Simplify right side
   10,420.88x = 75,968,850.89
5. Step 5: Solve for x
   x = 75,968,850.89/10,420.88
6. Step 6: Final answer
   x = 7,290.06