Finding the Fourth Proportional to 13,857.39, 19,123.65 and 7,570.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,857.39 : 19,123.65 = 7,570.17 : x
2. Step 2: Convert to fraction form
   13,857.39/19,123.65 = 7,570.17/x
3. Step 3: Cross multiply
   13,857.39x = 19,123.65 × 7,570.17
4. Step 4: Simplify right side
   13,857.39x = 144,769,281.52
5. Step 5: Solve for x
   x = 144,769,281.52/13,857.39
6. Step 6: Final answer
   x = 10,447.08