Finding the Fourth Proportional to 10,443.74, 15,661.94 and 4,899.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.74 : 15,661.94 = 4,899.68 : x
2. Step 2: Convert to fraction form
   10,443.74/15,661.94 = 4,899.68/x
3. Step 3: Cross multiply
   10,443.74x = 15,661.94 × 4,899.68
4. Step 4: Simplify right side
   10,443.74x = 76,738,494.18
5. Step 5: Solve for x
   x = 76,738,494.18/10,443.74
6. Step 6: Final answer
   x = 7,347.80