Finding the Fourth Proportional to 13,867.71, 19,137.39 and 7,580.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,867.71 : 19,137.39 = 7,580.09 : x
2. Step 2: Convert to fraction form
   13,867.71/19,137.39 = 7,580.09/x
3. Step 3: Cross multiply
   13,867.71x = 19,137.39 × 7,580.09
4. Step 4: Simplify right side
   13,867.71x = 145,063,042.88
5. Step 5: Solve for x
   x = 145,063,042.88/13,867.71
6. Step 6: Final answer
   x = 10,460.49