Finding the Fourth Proportional to 13,321.14, 18,380.86 and 7,654.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,321.14 : 18,380.86 = 7,654.56 : x
2. Step 2: Convert to fraction form
   13,321.14/18,380.86 = 7,654.56/x
3. Step 3: Cross multiply
   13,321.14x = 18,380.86 × 7,654.56
4. Step 4: Simplify right side
   13,321.14x = 140,697,395.72
5. Step 5: Solve for x
   x = 140,697,395.72/13,321.14
6. Step 6: Final answer
   x = 10,561.96