Finding the Fourth Proportional to 9,917.82, 13,686.98 and 5,441.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,917.82 : 13,686.98 = 5,441.74 : x
2. Step 2: Convert to fraction form
   9,917.82/13,686.98 = 5,441.74/x
3. Step 3: Cross multiply
   9,917.82x = 13,686.98 × 5,441.74
4. Step 4: Simplify right side
   9,917.82x = 74,480,925.12
5. Step 5: Solve for x
   x = 74,480,925.12/9,917.82
6. Step 6: Final answer
   x = 7,509.81