Finding the Fourth Proportional to 12,965.76, 17,892.36 and 7,300.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965.76 : 17,892.36 = 7,300.80 : x
2. Step 2: Convert to fraction form
   12,965.76/17,892.36 = 7,300.80/x
3. Step 3: Cross multiply
   12,965.76x = 17,892.36 × 7,300.80
4. Step 4: Simplify right side
   12,965.76x = 130,628,541.89
5. Step 5: Solve for x
   x = 130,628,541.89/12,965.76
6. Step 6: Final answer
   x = 10,074.89