Finding the Fourth Proportional to 12,402.81, 17,116.02 and 7,097.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.81 : 17,116.02 = 7,097.31 : x
2. Step 2: Convert to fraction form
   12,402.81/17,116.02 = 7,097.31/x
3. Step 3: Cross multiply
   12,402.81x = 17,116.02 × 7,097.31
4. Step 4: Simplify right side
   12,402.81x = 121,477,699.91
5. Step 5: Solve for x
   x = 121,477,699.91/12,402.81
6. Step 6: Final answer
   x = 9,794.37