Finding the Fourth Proportional to 13,826.16, 19,080.05 and 7,538.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,826.16 : 19,080.05 = 7,538.54 : x
2. Step 2: Convert to fraction form
   13,826.16/19,080.05 = 7,538.54/x
3. Step 3: Cross multiply
   13,826.16x = 19,080.05 × 7,538.54
4. Step 4: Simplify right side
   13,826.16x = 143,835,587.03
5. Step 5: Solve for x
   x = 143,835,587.03/13,826.16
6. Step 6: Final answer
   x = 10,403.15