Finding the Fourth Proportional to 12,803.50, 17,669.73 and 7,214.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,803.50 : 17,669.73 = 7,214.50 : x
2. Step 2: Convert to fraction form
   12,803.50/17,669.73 = 7,214.50/x
3. Step 3: Cross multiply
   12,803.50x = 17,669.73 × 7,214.50
4. Step 4: Simplify right side
   12,803.50x = 127,478,267.09
5. Step 5: Solve for x
   x = 127,478,267.09/12,803.50
6. Step 6: Final answer
   x = 9,956.52