Finding the Fourth Proportional to 13,781.50, 19,018.32 and 7,493.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,781.50 : 19,018.32 = 7,493.86 : x
2. Step 2: Convert to fraction form
   13,781.50/19,018.32 = 7,493.86/x
3. Step 3: Cross multiply
   13,781.50x = 19,018.32 × 7,493.86
4. Step 4: Simplify right side
   13,781.50x = 142,520,627.52
5. Step 5: Solve for x
   x = 142,520,627.52/13,781.50
6. Step 6: Final answer
   x = 10,341.45