Finding the Fourth Proportional to 12,824.04, 17,692.56 and 7,790.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,824.04 : 17,692.56 = 7,790.34 : x
2. Step 2: Convert to fraction form
   12,824.04/17,692.56 = 7,790.34/x
3. Step 3: Cross multiply
   12,824.04x = 17,692.56 × 7,790.34
4. Step 4: Simplify right side
   12,824.04x = 137,831,057.87
5. Step 5: Solve for x
   x = 137,831,057.87/12,824.04
6. Step 6: Final answer
   x = 10,747.87