Finding the Fourth Proportional to 9,917.34, 13,686.06 and 5,440.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,917.34 : 13,686.06 = 5,440.44 : x
2. Step 2: Convert to fraction form
   9,917.34/13,686.06 = 5,440.44/x
3. Step 3: Cross multiply
   9,917.34x = 13,686.06 × 5,440.44
4. Step 4: Simplify right side
   9,917.34x = 74,458,188.27
5. Step 5: Solve for x
   x = 74,458,188.27/9,917.34
6. Step 6: Final answer
   x = 7,507.88