Finding the Fourth Proportional to 13,828.88, 19,083.72 and 7,540.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,828.88 : 19,083.72 = 7,540.88 : x
2. Step 2: Convert to fraction form
   13,828.88/19,083.72 = 7,540.88/x
3. Step 3: Cross multiply
   13,828.88x = 19,083.72 × 7,540.88
4. Step 4: Simplify right side
   13,828.88x = 143,908,042.47
5. Step 5: Solve for x
   x = 143,908,042.47/13,828.88
6. Step 6: Final answer
   x = 10,406.34