Finding the Fourth Proportional to 13,778.31, 19,014.21 and 7,490.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,778.31 : 19,014.21 = 7,490.82 : x
2. Step 2: Convert to fraction form
   13,778.31/19,014.21 = 7,490.82/x
3. Step 3: Cross multiply
   13,778.31x = 19,014.21 × 7,490.82
4. Step 4: Simplify right side
   13,778.31x = 142,432,024.55
5. Step 5: Solve for x
   x = 142,432,024.55/13,778.31
6. Step 6: Final answer
   x = 10,337.41