Finding the Fourth Proportional to 9,898.18, 13,661.03 and 5,649.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.18 : 13,661.03 = 5,649.23 : x
2. Step 2: Convert to fraction form
   9,898.18/13,661.03 = 5,649.23/x
3. Step 3: Cross multiply
   9,898.18x = 13,661.03 × 5,649.23
4. Step 4: Simplify right side
   9,898.18x = 77,174,300.51
5. Step 5: Solve for x
   x = 77,174,300.51/9,898.18
6. Step 6: Final answer
   x = 7,796.82