Finding the Fourth Proportional to 12,956.05, 17,878.93 and 7,291.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956.05 : 17,878.93 = 7,291.12 : x
2. Step 2: Convert to fraction form
   12,956.05/17,878.93 = 7,291.12/x
3. Step 3: Cross multiply
   12,956.05x = 17,878.93 × 7,291.12
4. Step 4: Simplify right side
   12,956.05x = 130,357,424.10
5. Step 5: Solve for x
   x = 130,357,424.10/12,956.05
6. Step 6: Final answer
   x = 10,061.51