Finding the Fourth Proportional to 13,862.13, 19,129.73 and 7,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,862.13 : 19,129.73 = 7,574.50 : x
2. Step 2: Convert to fraction form
   13,862.13/19,129.73 = 7,574.50/x
3. Step 3: Cross multiply
   13,862.13x = 19,129.73 × 7,574.50
4. Step 4: Simplify right side
   13,862.13x = 144,898,139.89
5. Step 5: Solve for x
   x = 144,898,139.89/13,862.13
6. Step 6: Final answer
   x = 10,452.80