Finding the Fourth Proportional to 12,969.39, 19,457.01 and 3,964.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.39 : 19,457.01 = 3,964.31 : x
2. Step 2: Convert to fraction form
   12,969.39/19,457.01 = 3,964.31/x
3. Step 3: Cross multiply
   12,969.39x = 19,457.01 × 3,964.31
4. Step 4: Simplify right side
   12,969.39x = 77,133,522.03
5. Step 5: Solve for x
   x = 77,133,522.03/12,969.39
6. Step 6: Final answer
   x = 5,947.35