Finding the Fourth Proportional to 9,981.69, 13,774.64 and 5,505.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.69 : 13,774.64 = 5,505.47 : x
2. Step 2: Convert to fraction form
   9,981.69/13,774.64 = 5,505.47/x
3. Step 3: Cross multiply
   9,981.69x = 13,774.64 × 5,505.47
4. Step 4: Simplify right side
   9,981.69x = 75,835,915.98
5. Step 5: Solve for x
   x = 75,835,915.98/9,981.69
6. Step 6: Final answer
   x = 7,597.50