Finding the Fourth Proportional to 9,981.94, 13,775.18 and 5,505.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.94 : 13,775.18 = 5,505.86 : x
2. Step 2: Convert to fraction form
   9,981.94/13,775.18 = 5,505.86/x
3. Step 3: Cross multiply
   9,981.94x = 13,775.18 × 5,505.86
4. Step 4: Simplify right side
   9,981.94x = 75,844,172.95
5. Step 5: Solve for x
   x = 75,844,172.95/9,981.94
6. Step 6: Final answer
   x = 7,598.14