Finding the Fourth Proportional to 13,850.10, 19,111.74 and 7,881.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,850.10 : 19,111.74 = 7,881.42 : x
2. Step 2: Convert to fraction form
   13,850.10/19,111.74 = 7,881.42/x
3. Step 3: Cross multiply
   13,850.10x = 19,111.74 × 7,881.42
4. Step 4: Simplify right side
   13,850.10x = 150,627,649.87
5. Step 5: Solve for x
   x = 150,627,649.87/13,850.10
6. Step 6: Final answer
   x = 10,875.56