Finding the Fourth Proportional to 9,626.10, 13,505.70 and 9,626.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,626.10 : 13,505.70 = 9,626.10 : x
2. Step 2: Convert to fraction form
   9,626.10/13,505.70 = 9,626.10/x
3. Step 3: Cross multiply
   9,626.10x = 13,505.70 × 9,626.10
4. Step 4: Simplify right side
   9,626.10x = 130,007,218.77
5. Step 5: Solve for x
   x = 130,007,218.77/9,626.10
6. Step 6: Final answer
   x = 13,505.70