Finding the Fourth Proportional to 16,978.32, 23,430.32 and 9,322.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.32 : 23,430.32 = 9,322.22 : x
2. Step 2: Convert to fraction form
   16,978.32/23,430.32 = 9,322.22/x
3. Step 3: Cross multiply
   16,978.32x = 23,430.32 × 9,322.22
4. Step 4: Simplify right side
   16,978.32x = 218,422,597.71
5. Step 5: Solve for x
   x = 218,422,597.71/16,978.32
6. Step 6: Final answer
   x = 12,864.79