Finding the Fourth Proportional to 13,781.31, 19,018.35 and 7,493.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,781.31 : 19,018.35 = 7,493.82 : x
2. Step 2: Convert to fraction form
   13,781.31/19,018.35 = 7,493.82/x
3. Step 3: Cross multiply
   13,781.31x = 19,018.35 × 7,493.82
4. Step 4: Simplify right side
   13,781.31x = 142,520,091.60
5. Step 5: Solve for x
   x = 142,520,091.60/13,781.31
6. Step 6: Final answer
   x = 10,341.55