Finding the Fourth Proportional to 12,900.82, 17,802.08 and 7,234.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900.82 : 17,802.08 = 7,234.79 : x
2. Step 2: Convert to fraction form
   12,900.82/17,802.08 = 7,234.79/x
3. Step 3: Cross multiply
   12,900.82x = 17,802.08 × 7,234.79
4. Step 4: Simplify right side
   12,900.82x = 128,794,362.51
5. Step 5: Solve for x
   x = 128,794,362.51/12,900.82
6. Step 6: Final answer
   x = 9,983.42