Finding the Fourth Proportional to 13,861.34, 19,128.93 and 7,574.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,861.34 : 19,128.93 = 7,574.12 : x
2. Step 2: Convert to fraction form
   13,861.34/19,128.93 = 7,574.12/x
3. Step 3: Cross multiply
   13,861.34x = 19,128.93 × 7,574.12
4. Step 4: Simplify right side
   13,861.34x = 144,884,811.29
5. Step 5: Solve for x
   x = 144,884,811.29/13,861.34
6. Step 6: Final answer
   x = 10,452.44