Finding the Fourth Proportional to 13,273.85, 18,312.71 and 7,605.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,273.85 : 18,312.71 = 7,605.56 : x
2. Step 2: Convert to fraction form
   13,273.85/18,312.71 = 7,605.56/x
3. Step 3: Cross multiply
   13,273.85x = 18,312.71 × 7,605.56
4. Step 4: Simplify right side
   13,273.85x = 139,278,422.42
5. Step 5: Solve for x
   x = 139,278,422.42/13,273.85
6. Step 6: Final answer
   x = 10,492.69