Finding the Fourth Proportional to 12,864.54, 17,753.40 and 7,199.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,864.54 : 17,753.40 = 7,199.10 : x
2. Step 2: Convert to fraction form
   12,864.54/17,753.40 = 7,199.10/x
3. Step 3: Cross multiply
   12,864.54x = 17,753.40 × 7,199.10
4. Step 4: Simplify right side
   12,864.54x = 127,808,501.94
5. Step 5: Solve for x
   x = 127,808,501.94/12,864.54
6. Step 6: Final answer
   x = 9,934.95