Finding the Fourth Proportional to 12,116.30, 17,001.70 and 12,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.30 : 17,001.70 = 12,116.30 : x
2. Step 2: Convert to fraction form
   12,116.30/17,001.70 = 12,116.30/x
3. Step 3: Cross multiply
   12,116.30x = 17,001.70 × 12,116.30
4. Step 4: Simplify right side
   12,116.30x = 205,997,697.71
5. Step 5: Solve for x
   x = 205,997,697.71/12,116.30
6. Step 6: Final answer
   x = 17,001.70