Finding the Fourth Proportional to 13,781.77, 19,018.74 and 7,494.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,781.77 : 19,018.74 = 7,494.15 : x
2. Step 2: Convert to fraction form
   13,781.77/19,018.74 = 7,494.15/x
3. Step 3: Cross multiply
   13,781.77x = 19,018.74 × 7,494.15
4. Step 4: Simplify right side
   13,781.77x = 142,529,290.37
5. Step 5: Solve for x
   x = 142,529,290.37/13,781.77
6. Step 6: Final answer
   x = 10,341.87