Finding the Fourth Proportional to 12,698.31, 19,048.72 and 4,377.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698.31 : 19,048.72 = 4,377.23 : x
2. Step 2: Convert to fraction form
   12,698.31/19,048.72 = 4,377.23/x
3. Step 3: Cross multiply
   12,698.31x = 19,048.72 × 4,377.23
4. Step 4: Simplify right side
   12,698.31x = 83,380,702.33
5. Step 5: Solve for x
   x = 83,380,702.33/12,698.31
6. Step 6: Final answer
   x = 6,566.28