Finding the Fourth Proportional to 12,926.33, 17,845.43 and 7,822.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.33 : 17,845.43 = 7,822.80 : x
2. Step 2: Convert to fraction form
   12,926.33/17,845.43 = 7,822.80/x
3. Step 3: Cross multiply
   12,926.33x = 17,845.43 × 7,822.80
4. Step 4: Simplify right side
   12,926.33x = 139,601,140.58
5. Step 5: Solve for x
   x = 139,601,140.58/12,926.33
6. Step 6: Final answer
   x = 10,799.75