Finding the Fourth Proportional to 9,116.30, 12,801.70 and 9,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.30 : 12,801.70 = 9,116.30 : x
2. Step 2: Convert to fraction form
   9,116.30/12,801.70 = 9,116.30/x
3. Step 3: Cross multiply
   9,116.30x = 12,801.70 × 9,116.30
4. Step 4: Simplify right side
   9,116.30x = 116,704,137.71
5. Step 5: Solve for x
   x = 116,704,137.71/9,116.30
6. Step 6: Final answer
   x = 12,801.70