Finding the Fourth Proportional to 13,103.19, 19,617.12 and 12,180.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,103.19 : 19,617.12 = 12,180.56 : x
2. Step 2: Convert to fraction form
   13,103.19/19,617.12 = 12,180.56/x
3. Step 3: Cross multiply
   13,103.19x = 19,617.12 × 12,180.56
4. Step 4: Simplify right side
   13,103.19x = 238,947,409.10
5. Step 5: Solve for x
   x = 238,947,409.10/13,103.19
6. Step 6: Final answer
   x = 18,235.82