Finding the Fourth Proportional to 12,408.59, 17,123.60 and 7,103.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408.59 : 17,123.60 = 7,103.30 : x
2. Step 2: Convert to fraction form
   12,408.59/17,123.60 = 7,103.30/x
3. Step 3: Cross multiply
   12,408.59x = 17,123.60 × 7,103.30
4. Step 4: Simplify right side
   12,408.59x = 121,634,000.02
5. Step 5: Solve for x
   x = 121,634,000.02/12,408.59
6. Step 6: Final answer
   x = 9,802.40