Finding the Fourth Proportional to 13,863.54, 19,131.69 and 7,575.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,863.54 : 19,131.69 = 7,575.91 : x
2. Step 2: Convert to fraction form
   13,863.54/19,131.69 = 7,575.91/x
3. Step 3: Cross multiply
   13,863.54x = 19,131.69 × 7,575.91
4. Step 4: Simplify right side
   13,863.54x = 144,939,961.59
5. Step 5: Solve for x
   x = 144,939,961.59/13,863.54
6. Step 6: Final answer
   x = 10,454.76