Finding the Fourth Proportional to 9,981.50, 13,774.56 and 5,505.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.50 : 13,774.56 = 5,505.13 : x
2. Step 2: Convert to fraction form
   9,981.50/13,774.56 = 5,505.13/x
3. Step 3: Cross multiply
   9,981.50x = 13,774.56 × 5,505.13
4. Step 4: Simplify right side
   9,981.50x = 75,830,740.07
5. Step 5: Solve for x
   x = 75,830,740.07/9,981.50
6. Step 6: Final answer
   x = 7,597.13