Finding the Fourth Proportional to 10,110.49, 15,155.47 and 3,868.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,110.49 : 15,155.47 = 3,868.90 : x
2. Step 2: Convert to fraction form
   10,110.49/15,155.47 = 3,868.90/x
3. Step 3: Cross multiply
   10,110.49x = 15,155.47 × 3,868.90
4. Step 4: Simplify right side
   10,110.49x = 58,634,997.88
5. Step 5: Solve for x
   x = 58,634,997.88/10,110.49
6. Step 6: Final answer
   x = 5,799.42