Finding the Fourth Proportional to 9,875.43, 13,628.06 and 5,399.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,875.43 : 13,628.06 = 5,399.19 : x
2. Step 2: Convert to fraction form
   9,875.43/13,628.06 = 5,399.19/x
3. Step 3: Cross multiply
   9,875.43x = 13,628.06 × 5,399.19
4. Step 4: Simplify right side
   9,875.43x = 73,580,458.28
5. Step 5: Solve for x
   x = 73,580,458.28/9,875.43
6. Step 6: Final answer
   x = 7,450.86