Finding the Fourth Proportional to 12,225.87, 16,875.72 and 7,189.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,225.87 : 16,875.72 = 7,189.88 : x
2. Step 2: Convert to fraction form
   12,225.87/16,875.72 = 7,189.88/x
3. Step 3: Cross multiply
   12,225.87x = 16,875.72 × 7,189.88
4. Step 4: Simplify right side
   12,225.87x = 121,334,317.34
5. Step 5: Solve for x
   x = 121,334,317.34/12,225.87
6. Step 6: Final answer
   x = 9,924.39