Finding the Fourth Proportional to 13,061.80, 19,579.83 and 8,368.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.80 : 19,579.83 = 8,368.48 : x
2. Step 2: Convert to fraction form
   13,061.80/19,579.83 = 8,368.48/x
3. Step 3: Cross multiply
   13,061.80x = 19,579.83 × 8,368.48
4. Step 4: Simplify right side
   13,061.80x = 163,853,415.76
5. Step 5: Solve for x
   x = 163,853,415.76/13,061.80
6. Step 6: Final answer
   x = 12,544.47