Finding the Fourth Proportional to 9,920.35, 13,690.05 and 5,444.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920.35 : 13,690.05 = 5,444.18 : x
2. Step 2: Convert to fraction form
   9,920.35/13,690.05 = 5,444.18/x
3. Step 3: Cross multiply
   9,920.35x = 13,690.05 × 5,444.18
4. Step 4: Simplify right side
   9,920.35x = 74,531,096.41
5. Step 5: Solve for x
   x = 74,531,096.41/9,920.35
6. Step 6: Final answer
   x = 7,512.95