Finding the Fourth Proportional to 12,666.82, 19,002.67 and 5,267.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.82 : 19,002.67 = 5,267.30 : x
2. Step 2: Convert to fraction form
   12,666.82/19,002.67 = 5,267.30/x
3. Step 3: Cross multiply
   12,666.82x = 19,002.67 × 5,267.30
4. Step 4: Simplify right side
   12,666.82x = 100,092,763.69
5. Step 5: Solve for x
   x = 100,092,763.69/12,666.82
6. Step 6: Final answer
   x = 7,901.96