Finding the Fourth Proportional to 9,866.30, 13,615.25 and 5,389.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,866.30 : 13,615.25 = 5,389.92 : x
2. Step 2: Convert to fraction form
   9,866.30/13,615.25 = 5,389.92/x
3. Step 3: Cross multiply
   9,866.30x = 13,615.25 × 5,389.92
4. Step 4: Simplify right side
   9,866.30x = 73,385,081.33
5. Step 5: Solve for x
   x = 73,385,081.33/9,866.30
6. Step 6: Final answer
   x = 7,437.96