Finding the Fourth Proportional to 12,410.22, 18,619.17 and 3,977.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,410.22 : 18,619.17 = 3,977.98 : x
2. Step 2: Convert to fraction form
   12,410.22/18,619.17 = 3,977.98/x
3. Step 3: Cross multiply
   12,410.22x = 18,619.17 × 3,977.98
4. Step 4: Simplify right side
   12,410.22x = 74,066,685.88
5. Step 5: Solve for x
   x = 74,066,685.88/12,410.22
6. Step 6: Final answer
   x = 5,968.20