Finding the Fourth Proportional to 13,276.32, 18,321.72 and 7,308.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.32 : 18,321.72 = 7,308.12 : x
2. Step 2: Convert to fraction form
   13,276.32/18,321.72 = 7,308.12/x
3. Step 3: Cross multiply
   13,276.32x = 18,321.72 × 7,308.12
4. Step 4: Simplify right side
   13,276.32x = 133,897,328.37
5. Step 5: Solve for x
   x = 133,897,328.37/13,276.32
6. Step 6: Final answer
   x = 10,085.42