Finding the Fourth Proportional to 13,775.92, 19,010.90 and 7,488.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,775.92 : 19,010.90 = 7,488.31 : x
2. Step 2: Convert to fraction form
   13,775.92/19,010.90 = 7,488.31/x
3. Step 3: Cross multiply
   13,775.92x = 19,010.90 × 7,488.31
4. Step 4: Simplify right side
   13,775.92x = 142,359,512.58
5. Step 5: Solve for x
   x = 142,359,512.58/13,775.92
6. Step 6: Final answer
   x = 10,333.94