Finding the Fourth Proportional to 9,870.09, 13,620.84 and 5,393.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.09 : 13,620.84 = 5,393.88 : x
2. Step 2: Convert to fraction form
   9,870.09/13,620.84 = 5,393.88/x
3. Step 3: Cross multiply
   9,870.09x = 13,620.84 × 5,393.88
4. Step 4: Simplify right side
   9,870.09x = 73,469,176.46
5. Step 5: Solve for x
   x = 73,469,176.46/9,870.09
6. Step 6: Final answer
   x = 7,443.62