Finding the Fourth Proportional to 12,900.57, 17,805.72 and 7,597.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900.57 : 17,805.72 = 7,597.10 : x
2. Step 2: Convert to fraction form
   12,900.57/17,805.72 = 7,597.10/x
3. Step 3: Cross multiply
   12,900.57x = 17,805.72 × 7,597.10
4. Step 4: Simplify right side
   12,900.57x = 135,271,746.38
5. Step 5: Solve for x
   x = 135,271,746.38/12,900.57
6. Step 6: Final answer
   x = 10,485.72