Finding the Fourth Proportional to 13,826.88, 19,080.96 and 7,538.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,826.88 : 19,080.96 = 7,538.88 : x
2. Step 2: Convert to fraction form
   13,826.88/19,080.96 = 7,538.88/x
3. Step 3: Cross multiply
   13,826.88x = 19,080.96 × 7,538.88
4. Step 4: Simplify right side
   13,826.88x = 143,849,067.72
5. Step 5: Solve for x
   x = 143,849,067.72/13,826.88
6. Step 6: Final answer
   x = 10,403.58