Finding the Fourth Proportional to 9,981.36, 13,774.10 and 5,505.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.36 : 13,774.10 = 5,505.12 : x
2. Step 2: Convert to fraction form
   9,981.36/13,774.10 = 5,505.12/x
3. Step 3: Cross multiply
   9,981.36x = 13,774.10 × 5,505.12
4. Step 4: Simplify right side
   9,981.36x = 75,828,045.87
5. Step 5: Solve for x
   x = 75,828,045.87/9,981.36
6. Step 6: Final answer
   x = 7,596.97