Finding the Fourth Proportional to 12,950.23, 17,870.88 and 7,285.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950.23 : 17,870.88 = 7,285.09 : x
2. Step 2: Convert to fraction form
   12,950.23/17,870.88 = 7,285.09/x
3. Step 3: Cross multiply
   12,950.23x = 17,870.88 × 7,285.09
4. Step 4: Simplify right side
   12,950.23x = 130,190,969.18
5. Step 5: Solve for x
   x = 130,190,969.18/12,950.23
6. Step 6: Final answer
   x = 10,053.18