Finding the Fourth Proportional to 12,730.50, 19,100.61 and 4,939.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,730.50 : 19,100.61 = 4,939.92 : x
2. Step 2: Convert to fraction form
   12,730.50/19,100.61 = 4,939.92/x
3. Step 3: Cross multiply
   12,730.50x = 19,100.61 × 4,939.92
4. Step 4: Simplify right side
   12,730.50x = 94,355,485.35
5. Step 5: Solve for x
   x = 94,355,485.35/12,730.50
6. Step 6: Final answer
   x = 7,411.77