Finding the Fourth Proportional to 9,875.56, 13,628.16 and 5,399.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,875.56 : 13,628.16 = 5,399.32 : x
2. Step 2: Convert to fraction form
   9,875.56/13,628.16 = 5,399.32/x
3. Step 3: Cross multiply
   9,875.56x = 13,628.16 × 5,399.32
4. Step 4: Simplify right side
   9,875.56x = 73,582,796.85
5. Step 5: Solve for x
   x = 73,582,796.85/9,875.56
6. Step 6: Final answer
   x = 7,451.00