Finding the Fourth Proportional to 12,577.76, 17,355.98 and 7,274.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,577.76 : 17,355.98 = 7,274.30 : x
2. Step 2: Convert to fraction form
   12,577.76/17,355.98 = 7,274.30/x
3. Step 3: Cross multiply
   12,577.76x = 17,355.98 × 7,274.30
4. Step 4: Simplify right side
   12,577.76x = 126,252,605.31
5. Step 5: Solve for x
   x = 126,252,605.31/12,577.76
6. Step 6: Final answer
   x = 10,037.77