Finding the Fourth Proportional to 13,276.58, 18,321.53 and 7,308.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.58 : 18,321.53 = 7,308.12 : x
2. Step 2: Convert to fraction form
   13,276.58/18,321.53 = 7,308.12/x
3. Step 3: Cross multiply
   13,276.58x = 18,321.53 × 7,308.12
4. Step 4: Simplify right side
   13,276.58x = 133,895,958.09
5. Step 5: Solve for x
   x = 133,895,958.09/13,276.58
6. Step 6: Final answer
   x = 10,085.12