Finding the Fourth Proportional to 13,276.61, 18,321.72 and 7,308.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.61 : 18,321.72 = 7,308.25 : x
2. Step 2: Convert to fraction form
   13,276.61/18,321.72 = 7,308.25/x
3. Step 3: Cross multiply
   13,276.61x = 18,321.72 × 7,308.25
4. Step 4: Simplify right side
   13,276.61x = 133,899,710.19
5. Step 5: Solve for x
   x = 133,899,710.19/13,276.61
6. Step 6: Final answer
   x = 10,085.38