Finding the Fourth Proportional to 12,398.50, 17,109.93 and 6,809.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,398.50 : 17,109.93 = 6,809.50 : x
2. Step 2: Convert to fraction form
   12,398.50/17,109.93 = 6,809.50/x
3. Step 3: Cross multiply
   12,398.50x = 17,109.93 × 6,809.50
4. Step 4: Simplify right side
   12,398.50x = 116,510,068.34
5. Step 5: Solve for x
   x = 116,510,068.34/12,398.50
6. Step 6: Final answer
   x = 9,397.11