Finding the Fourth Proportional to 9,981.96, 13,775.88 and 5,506.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.96 : 13,775.88 = 5,506.60 : x
2. Step 2: Convert to fraction form
   9,981.96/13,775.88 = 5,506.60/x
3. Step 3: Cross multiply
   9,981.96x = 13,775.88 × 5,506.60
4. Step 4: Simplify right side
   9,981.96x = 75,858,260.81
5. Step 5: Solve for x
   x = 75,858,260.81/9,981.96
6. Step 6: Final answer
   x = 7,599.54