Finding the Fourth Proportional to 12,950.56, 19,421.72 and 5,553.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950.56 : 19,421.72 = 5,553.03 : x
2. Step 2: Convert to fraction form
   12,950.56/19,421.72 = 5,553.03/x
3. Step 3: Cross multiply
   12,950.56x = 19,421.72 × 5,553.03
4. Step 4: Simplify right side
   12,950.56x = 107,849,436.31
5. Step 5: Solve for x
   x = 107,849,436.31/12,950.56
6. Step 6: Final answer
   x = 8,327.78