Finding the Fourth Proportional to 13,604, 18,773.52 and 7,716

Step by Step Solution

1. Step 1: Write the proportion equation
   13,604 : 18,773.52 = 7,716 : x
2. Step 2: Convert to fraction form
   13,604/18,773.52 = 7,716/x
3. Step 3: Cross multiply
   13,604x = 18,773.52 × 7,716
4. Step 4: Simplify right side
   13,604x = 144,856,480.32
5. Step 5: Solve for x
   x = 144,856,480.32/13,604
6. Step 6: Final answer
   x = 10,648.08