Finding the Fourth Proportional to 12,610.50, 18,914.06 and 5,213.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,610.50 : 18,914.06 = 5,213.94 : x
2. Step 2: Convert to fraction form
   12,610.50/18,914.06 = 5,213.94/x
3. Step 3: Cross multiply
   12,610.50x = 18,914.06 × 5,213.94
4. Step 4: Simplify right side
   12,610.50x = 98,616,747.93
5. Step 5: Solve for x
   x = 98,616,747.93/12,610.50
6. Step 6: Final answer
   x = 7,820.21