Finding the Fourth Proportional to 13,693.14, 18,896.52 and 7,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,693.14 : 18,896.52 = 7,405.50 : x
2. Step 2: Convert to fraction form
   13,693.14/18,896.52 = 7,405.50/x
3. Step 3: Cross multiply
   13,693.14x = 18,896.52 × 7,405.50
4. Step 4: Simplify right side
   13,693.14x = 139,938,178.86
5. Step 5: Solve for x
   x = 139,938,178.86/13,693.14
6. Step 6: Final answer
   x = 10,219.58