Finding the Fourth Proportional to 10,020.56, 15,021.12 and 3,778.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,020.56 : 15,021.12 = 3,778.88 : x
2. Step 2: Convert to fraction form
   10,020.56/15,021.12 = 3,778.88/x
3. Step 3: Cross multiply
   10,020.56x = 15,021.12 × 3,778.88
4. Step 4: Simplify right side
   10,020.56x = 56,763,009.95
5. Step 5: Solve for x
   x = 56,763,009.95/10,020.56
6. Step 6: Final answer
   x = 5,664.65