Finding the Fourth Proportional to 12,971.36, 17,900.32 and 7,382.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,971.36 : 17,900.32 = 7,382.32 : x
2. Step 2: Convert to fraction form
   12,971.36/17,900.32 = 7,382.32/x
3. Step 3: Cross multiply
   12,971.36x = 17,900.32 × 7,382.32
4. Step 4: Simplify right side
   12,971.36x = 132,145,890.34
5. Step 5: Solve for x
   x = 132,145,890.34/12,971.36
6. Step 6: Final answer
   x = 10,187.51