Finding the Fourth Proportional to 13,148.49, 19,673.33 and 7,864.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.49 : 19,673.33 = 7,864.05 : x
2. Step 2: Convert to fraction form
   13,148.49/19,673.33 = 7,864.05/x
3. Step 3: Cross multiply
   13,148.49x = 19,673.33 × 7,864.05
4. Step 4: Simplify right side
   13,148.49x = 154,712,011.47
5. Step 5: Solve for x
   x = 154,712,011.47/13,148.49
6. Step 6: Final answer
   x = 11,766.52