Finding the Fourth Proportional to 10,411.48, 15,619.52 and 4,861.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,411.48 : 15,619.52 = 4,861.80 : x
2. Step 2: Convert to fraction form
   10,411.48/15,619.52 = 4,861.80/x
3. Step 3: Cross multiply
   10,411.48x = 15,619.52 × 4,861.80
4. Step 4: Simplify right side
   10,411.48x = 75,938,982.34
5. Step 5: Solve for x
   x = 75,938,982.34/10,411.48
6. Step 6: Final answer
   x = 7,293.77