Finding the Fourth Proportional to 9,890.01, 13,647.83 and 5,699.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.01 : 13,647.83 = 5,699.61 : x
2. Step 2: Convert to fraction form
   9,890.01/13,647.83 = 5,699.61/x
3. Step 3: Cross multiply
   9,890.01x = 13,647.83 × 5,699.61
4. Step 4: Simplify right side
   9,890.01x = 77,787,279.85
5. Step 5: Solve for x
   x = 77,787,279.85/9,890.01
6. Step 6: Final answer
   x = 7,865.24