Finding the Fourth Proportional to 16,978.55, 25,456.07 and 7,486.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.55 : 25,456.07 = 7,486.22 : x
2. Step 2: Convert to fraction form
   16,978.55/25,456.07 = 7,486.22/x
3. Step 3: Cross multiply
   16,978.55x = 25,456.07 × 7,486.22
4. Step 4: Simplify right side
   16,978.55x = 190,569,822.71
5. Step 5: Solve for x
   x = 190,569,822.71/16,978.55
6. Step 6: Final answer
   x = 11,224.16