Finding the Fourth Proportional to 13,374.74, 18,456.53 and 7,710.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,374.74 : 18,456.53 = 7,710.50 : x
2. Step 2: Convert to fraction form
   13,374.74/18,456.53 = 7,710.50/x
3. Step 3: Cross multiply
   13,374.74x = 18,456.53 × 7,710.50
4. Step 4: Simplify right side
   13,374.74x = 142,309,082.15
5. Step 5: Solve for x
   x = 142,309,082.15/13,374.74
6. Step 6: Final answer
   x = 10,640.14