Finding the Fourth Proportional to 13,402.05, 18,492.06 and 7,736.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.05 : 18,492.06 = 7,736.70 : x
2. Step 2: Convert to fraction form
   13,402.05/18,492.06 = 7,736.70/x
3. Step 3: Cross multiply
   13,402.05x = 18,492.06 × 7,736.70
4. Step 4: Simplify right side
   13,402.05x = 143,067,520.60
5. Step 5: Solve for x
   x = 143,067,520.60/13,402.05
6. Step 6: Final answer
   x = 10,675.05