Finding the Fourth Proportional to 9,907.48, 13,673.46 and 5,659.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,907.48 : 13,673.46 = 5,659.21 : x
2. Step 2: Convert to fraction form
   9,907.48/13,673.46 = 5,659.21/x
3. Step 3: Cross multiply
   9,907.48x = 13,673.46 × 5,659.21
4. Step 4: Simplify right side
   9,907.48x = 77,380,981.57
5. Step 5: Solve for x
   x = 77,380,981.57/9,907.48
6. Step 6: Final answer
   x = 7,810.36