Finding the Fourth Proportional to 9,860.80, 13,607.98 and 5,612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.80 : 13,607.98 = 5,612.18 : x
2. Step 2: Convert to fraction form
   9,860.80/13,607.98 = 5,612.18/x
3. Step 3: Cross multiply
   9,860.80x = 13,607.98 × 5,612.18
4. Step 4: Simplify right side
   9,860.80x = 76,370,482.21
5. Step 5: Solve for x
   x = 76,370,482.21/9,860.80
6. Step 6: Final answer
   x = 7,744.86