Finding the Fourth Proportional to 13,859.12, 19,124.72 and 7,570.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,859.12 : 19,124.72 = 7,570.24 : x
2. Step 2: Convert to fraction form
   13,859.12/19,124.72 = 7,570.24/x
3. Step 3: Cross multiply
   13,859.12x = 19,124.72 × 7,570.24
4. Step 4: Simplify right side
   13,859.12x = 144,778,720.33
5. Step 5: Solve for x
   x = 144,778,720.33/13,859.12
6. Step 6: Final answer
   x = 10,446.46