Finding the Fourth Proportional to 12,971.23, 17,900.96 and 7,933.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,971.23 : 17,900.96 = 7,933.87 : x
2. Step 2: Convert to fraction form
   12,971.23/17,900.96 = 7,933.87/x
3. Step 3: Cross multiply
   12,971.23x = 17,900.96 × 7,933.87
4. Step 4: Simplify right side
   12,971.23x = 142,023,889.52
5. Step 5: Solve for x
   x = 142,023,889.52/12,971.23
6. Step 6: Final answer
   x = 10,949.15