Finding the Fourth Proportional to 12,921.53, 17,832.56 and 7,256.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,921.53 : 17,832.56 = 7,256.69 : x
2. Step 2: Convert to fraction form
   12,921.53/17,832.56 = 7,256.69/x
3. Step 3: Cross multiply
   12,921.53x = 17,832.56 × 7,256.69
4. Step 4: Simplify right side
   12,921.53x = 129,405,301.25
5. Step 5: Solve for x
   x = 129,405,301.25/12,921.53
6. Step 6: Final answer
   x = 10,014.71