Finding the Fourth Proportional to 19,891.05, 29,834.35 and 5,100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,891.05 : 29,834.35 = 5,100.31 : x
2. Step 2: Convert to fraction form
   19,891.05/29,834.35 = 5,100.31/x
3. Step 3: Cross multiply
   19,891.05x = 29,834.35 × 5,100.31
4. Step 4: Simplify right side
   19,891.05x = 152,164,433.65
5. Step 5: Solve for x
   x = 152,164,433.65/19,891.05
6. Step 6: Final answer
   x = 7,649.89