Finding the Fourth Proportional to 9,981.81, 13,774.97 and 5,505.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.81 : 13,774.97 = 5,505.69 : x
2. Step 2: Convert to fraction form
   9,981.81/13,774.97 = 5,505.69/x
3. Step 3: Cross multiply
   9,981.81x = 13,774.97 × 5,505.69
4. Step 4: Simplify right side
   9,981.81x = 75,840,618.18
5. Step 5: Solve for x
   x = 75,840,618.18/9,981.81
6. Step 6: Final answer
   x = 7,597.88