Finding the Fourth Proportional to 21,776.67, 30,050.94 and 12,345.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,776.67 : 30,050.94 = 12,345.03 : x
2. Step 2: Convert to fraction form
   21,776.67/30,050.94 = 12,345.03/x
3. Step 3: Cross multiply
   21,776.67x = 30,050.94 × 12,345.03
4. Step 4: Simplify right side
   21,776.67x = 370,979,755.83
5. Step 5: Solve for x
   x = 370,979,755.83/21,776.67
6. Step 6: Final answer
   x = 17,035.65