Finding the Fourth Proportional to 20,635.89, 30,935.00 and 7,485.35

Step by Step Solution

1. Step 1: Write the proportion equation
   20,635.89 : 30,935.00 = 7,485.35 : x
2. Step 2: Convert to fraction form
   20,635.89/30,935.00 = 7,485.35/x
3. Step 3: Cross multiply
   20,635.89x = 30,935.00 × 7,485.35
4. Step 4: Simplify right side
   20,635.89x = 231,559,110.15
5. Step 5: Solve for x
   x = 231,559,110.15/20,635.89
6. Step 6: Final answer
   x = 11,221.18