Finding the Fourth Proportional to 13,818.70, 19,070.79 and 7,850.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,818.70 : 19,070.79 = 7,850.82 : x
2. Step 2: Convert to fraction form
   13,818.70/19,070.79 = 7,850.82/x
3. Step 3: Cross multiply
   13,818.70x = 19,070.79 × 7,850.82
4. Step 4: Simplify right side
   13,818.70x = 149,721,425.78
5. Step 5: Solve for x
   x = 149,721,425.78/13,818.70
6. Step 6: Final answer
   x = 10,834.70