Finding the Fourth Proportional to 12,225.04, 16,870.63 and 7,189.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,225.04 : 16,870.63 = 7,189.48 : x
2. Step 2: Convert to fraction form
   12,225.04/16,870.63 = 7,189.48/x
3. Step 3: Cross multiply
   12,225.04x = 16,870.63 × 7,189.48
4. Step 4: Simplify right side
   12,225.04x = 121,290,978.67
5. Step 5: Solve for x
   x = 121,290,978.67/12,225.04
6. Step 6: Final answer
   x = 9,921.52