Finding the Fourth Proportional to 10,355.11, 15,526.68 and 7,072.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.11 : 15,526.68 = 7,072.18 : x
2. Step 2: Convert to fraction form
   10,355.11/15,526.68 = 7,072.18/x
3. Step 3: Cross multiply
   10,355.11x = 15,526.68 × 7,072.18
4. Step 4: Simplify right side
   10,355.11x = 109,807,475.76
5. Step 5: Solve for x
   x = 109,807,475.76/10,355.11
6. Step 6: Final answer
   x = 10,604.18