Finding the Fourth Proportional to 10,111.02, 15,165.78 and 3,871.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.02 : 15,165.78 = 3,871.59 : x
2. Step 2: Convert to fraction form
   10,111.02/15,165.78 = 3,871.59/x
3. Step 3: Cross multiply
   10,111.02x = 15,165.78 × 3,871.59
4. Step 4: Simplify right side
   10,111.02x = 58,715,682.19
5. Step 5: Solve for x
   x = 58,715,682.19/10,111.02
6. Step 6: Final answer
   x = 5,807.10