Finding the Fourth Proportional to 12,795.57, 17,657.61 and 7,130.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,795.57 : 17,657.61 = 7,130.29 : x
2. Step 2: Convert to fraction form
   12,795.57/17,657.61 = 7,130.29/x
3. Step 3: Cross multiply
   12,795.57x = 17,657.61 × 7,130.29
4. Step 4: Simplify right side
   12,795.57x = 125,903,880.01
5. Step 5: Solve for x
   x = 125,903,880.01/12,795.57
6. Step 6: Final answer
   x = 9,839.65