Finding the Fourth Proportional to 13,819.90, 19,071.41 and 7,853.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,819.90 : 19,071.41 = 7,853.49 : x
2. Step 2: Convert to fraction form
   13,819.90/19,071.41 = 7,853.49/x
3. Step 3: Cross multiply
   13,819.90x = 19,071.41 × 7,853.49
4. Step 4: Simplify right side
   13,819.90x = 149,777,127.72
5. Step 5: Solve for x
   x = 149,777,127.72/13,819.90
6. Step 6: Final answer
   x = 10,837.79