Finding the Fourth Proportional to 10,219.35, 15,307.56 and 4,946.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,219.35 : 15,307.56 = 4,946.79 : x
2. Step 2: Convert to fraction form
   10,219.35/15,307.56 = 4,946.79/x
3. Step 3: Cross multiply
   10,219.35x = 15,307.56 × 4,946.79
4. Step 4: Simplify right side
   10,219.35x = 75,723,284.73
5. Step 5: Solve for x
   x = 75,723,284.73/10,219.35
6. Step 6: Final answer
   x = 7,409.79