Finding the Fourth Proportional to 13,826.46, 19,080.54 and 7,538.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,826.46 : 19,080.54 = 7,538.88 : x
2. Step 2: Convert to fraction form
   13,826.46/19,080.54 = 7,538.88/x
3. Step 3: Cross multiply
   13,826.46x = 19,080.54 × 7,538.88
4. Step 4: Simplify right side
   13,826.46x = 143,845,901.40
5. Step 5: Solve for x
   x = 143,845,901.40/13,826.46
6. Step 6: Final answer
   x = 10,403.67