Finding the Fourth Proportional to 12,921.02, 19,383.49 and 5,525.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,921.02 : 19,383.49 = 5,525.50 : x
2. Step 2: Convert to fraction form
   12,921.02/19,383.49 = 5,525.50/x
3. Step 3: Cross multiply
   12,921.02x = 19,383.49 × 5,525.50
4. Step 4: Simplify right side
   12,921.02x = 107,103,474.00
5. Step 5: Solve for x
   x = 107,103,474.00/12,921.02
6. Step 6: Final answer
   x = 8,289.09