Finding the Fourth Proportional to 13,111.10, 18,073.11 and 10,454.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.10 : 18,073.11 = 10,454.30 : x
2. Step 2: Convert to fraction form
   13,111.10/18,073.11 = 10,454.30/x
3. Step 3: Cross multiply
   13,111.10x = 18,073.11 × 10,454.30
4. Step 4: Simplify right side
   13,111.10x = 188,941,713.87
5. Step 5: Solve for x
   x = 188,941,713.87/13,111.10
6. Step 6: Final answer
   x = 14,410.82