Finding the Fourth Proportional to 12,964.79, 17,890.34 and 7,297.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,964.79 : 17,890.34 = 7,297.72 : x
2. Step 2: Convert to fraction form
   12,964.79/17,890.34 = 7,297.72/x
3. Step 3: Cross multiply
   12,964.79x = 17,890.34 × 7,297.72
4. Step 4: Simplify right side
   12,964.79x = 130,558,610.81
5. Step 5: Solve for x
   x = 130,558,610.81/12,964.79
6. Step 6: Final answer
   x = 10,070.24