Finding the Fourth Proportional to 12,969.90, 17,898.81 and 7,934.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.90 : 17,898.81 = 7,934.03 : x
2. Step 2: Convert to fraction form
   12,969.90/17,898.81 = 7,934.03/x
3. Step 3: Cross multiply
   12,969.90x = 17,898.81 × 7,934.03
4. Step 4: Simplify right side
   12,969.90x = 142,009,606.01
5. Step 5: Solve for x
   x = 142,009,606.01/12,969.90
6. Step 6: Final answer
   x = 10,949.17