Finding the Fourth Proportional to 12,969.77, 17,898.64 and 7,933.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.77 : 17,898.64 = 7,933.90 : x
2. Step 2: Convert to fraction form
   12,969.77/17,898.64 = 7,933.90/x
3. Step 3: Cross multiply
   12,969.77x = 17,898.64 × 7,933.90
4. Step 4: Simplify right side
   12,969.77x = 142,006,019.90
5. Step 5: Solve for x
   x = 142,006,019.90/12,969.77
6. Step 6: Final answer
   x = 10,949.00