Finding the Fourth Proportional to 9,827.31, 13,561.68 and 5,351.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,827.31 : 13,561.68 = 5,351.06 : x
2. Step 2: Convert to fraction form
   9,827.31/13,561.68 = 5,351.06/x
3. Step 3: Cross multiply
   9,827.31x = 13,561.68 × 5,351.06
4. Step 4: Simplify right side
   9,827.31x = 72,569,295.57
5. Step 5: Solve for x
   x = 72,569,295.57/9,827.31
6. Step 6: Final answer
   x = 7,384.45