Finding the Fourth Proportional to 10,018.56, 15,018.12 and 3,776.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,018.56 : 15,018.12 = 3,776.88 : x
2. Step 2: Convert to fraction form
   10,018.56/15,018.12 = 3,776.88/x
3. Step 3: Cross multiply
   10,018.56x = 15,018.12 × 3,776.88
4. Step 4: Simplify right side
   10,018.56x = 56,721,637.07
5. Step 5: Solve for x
   x = 56,721,637.07/10,018.56
6. Step 6: Final answer
   x = 5,661.66