Finding the Fourth Proportional to 13,858.31, 19,124.48 and 7,570.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,858.31 : 19,124.48 = 7,570.69 : x
2. Step 2: Convert to fraction form
   13,858.31/19,124.48 = 7,570.69/x
3. Step 3: Cross multiply
   13,858.31x = 19,124.48 × 7,570.69
4. Step 4: Simplify right side
   13,858.31x = 144,785,480.61
5. Step 5: Solve for x
   x = 144,785,480.61/13,858.31
6. Step 6: Final answer
   x = 10,447.55