Finding the Fourth Proportional to 9,997.89, 13,796.73 and 5,521.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,997.89 : 13,796.73 = 5,521.41 : x
2. Step 2: Convert to fraction form
   9,997.89/13,796.73 = 5,521.41/x
3. Step 3: Cross multiply
   9,997.89x = 13,796.73 × 5,521.41
4. Step 4: Simplify right side
   9,997.89x = 76,177,402.99
5. Step 5: Solve for x
   x = 76,177,402.99/9,997.89
6. Step 6: Final answer
   x = 7,619.35