Finding the Fourth Proportional to 13,697.34, 18,902.25 and 7,409.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,697.34 : 18,902.25 = 7,409.76 : x
2. Step 2: Convert to fraction form
   13,697.34/18,902.25 = 7,409.76/x
3. Step 3: Cross multiply
   13,697.34x = 18,902.25 × 7,409.76
4. Step 4: Simplify right side
   13,697.34x = 140,061,135.96
5. Step 5: Solve for x
   x = 140,061,135.96/13,697.34
6. Step 6: Final answer
   x = 10,225.43