Finding the Fourth Proportional to 13,308.63, 18,366.75 and 7,340.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.63 : 18,366.75 = 7,340.31 : x
2. Step 2: Convert to fraction form
   13,308.63/18,366.75 = 7,340.31/x
3. Step 3: Cross multiply
   13,308.63x = 18,366.75 × 7,340.31
4. Step 4: Simplify right side
   13,308.63x = 134,817,638.69
5. Step 5: Solve for x
   x = 134,817,638.69/13,308.63
6. Step 6: Final answer
   x = 10,130.09