Finding the Fourth Proportional to 13,340.72, 18,412.48 and 7,754.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,340.72 : 18,412.48 = 7,754.96 : x
2. Step 2: Convert to fraction form
   13,340.72/18,412.48 = 7,754.96/x
3. Step 3: Cross multiply
   13,340.72x = 18,412.48 × 7,754.96
4. Step 4: Simplify right side
   13,340.72x = 142,788,045.90
5. Step 5: Solve for x
   x = 142,788,045.90/13,340.72
6. Step 6: Final answer
   x = 10,703.17