Finding the Fourth Proportional to 12,942.28, 19,401.83 and 4,621.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.28 : 19,401.83 = 4,621.10 : x
2. Step 2: Convert to fraction form
   12,942.28/19,401.83 = 4,621.10/x
3. Step 3: Cross multiply
   12,942.28x = 19,401.83 × 4,621.10
4. Step 4: Simplify right side
   12,942.28x = 89,657,802.96
5. Step 5: Solve for x
   x = 89,657,802.96/12,942.28
6. Step 6: Final answer
   x = 6,927.51