Finding the Fourth Proportional to 13,871.91, 19,143.23 and 7,498.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,871.91 : 19,143.23 = 7,498.47 : x
2. Step 2: Convert to fraction form
   13,871.91/19,143.23 = 7,498.47/x
3. Step 3: Cross multiply
   13,871.91x = 19,143.23 × 7,498.47
4. Step 4: Simplify right side
   13,871.91x = 143,544,898.37
5. Step 5: Solve for x
   x = 143,544,898.37/13,871.91
6. Step 6: Final answer
   x = 10,347.88