Finding the Fourth Proportional to 10,131.05, 15,189.40 and 3,885.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.05 : 15,189.40 = 3,885.80 : x
2. Step 2: Convert to fraction form
   10,131.05/15,189.40 = 3,885.80/x
3. Step 3: Cross multiply
   10,131.05x = 15,189.40 × 3,885.80
4. Step 4: Simplify right side
   10,131.05x = 59,022,931.22
5. Step 5: Solve for x
   x = 59,022,931.22/10,131.05
6. Step 6: Final answer
   x = 5,825.94