Finding the Fourth Proportional to 13,781.42, 19,018.23 and 7,493.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,781.42 : 19,018.23 = 7,493.79 : x
2. Step 2: Convert to fraction form
   13,781.42/19,018.23 = 7,493.79/x
3. Step 3: Cross multiply
   13,781.42x = 19,018.23 × 7,493.79
4. Step 4: Simplify right side
   13,781.42x = 142,518,584.32
5. Step 5: Solve for x
   x = 142,518,584.32/13,781.42
6. Step 6: Final answer
   x = 10,341.36