Finding the Fourth Proportional to 12,003.39, 16,561.80 and 7,286.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.39 : 16,561.80 = 7,286.76 : x
2. Step 2: Convert to fraction form
   12,003.39/16,561.80 = 7,286.76/x
3. Step 3: Cross multiply
   12,003.39x = 16,561.80 × 7,286.76
4. Step 4: Simplify right side
   12,003.39x = 120,681,861.77
5. Step 5: Solve for x
   x = 120,681,861.77/12,003.39
6. Step 6: Final answer
   x = 10,053.98