Finding the Fourth Proportional to 13,943.89, 19,242.21 and 7,570.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,943.89 : 19,242.21 = 7,570.27 : x
2. Step 2: Convert to fraction form
   13,943.89/19,242.21 = 7,570.27/x
3. Step 3: Cross multiply
   13,943.89x = 19,242.21 × 7,570.27
4. Step 4: Simplify right side
   13,943.89x = 145,668,725.10
5. Step 5: Solve for x
   x = 145,668,725.10/13,943.89
6. Step 6: Final answer
   x = 10,446.78