Finding the Fourth Proportional to 12,260.89, 16,919.86 and 7,225.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,260.89 : 16,919.86 = 7,225.32 : x
2. Step 2: Convert to fraction form
   12,260.89/16,919.86 = 7,225.32/x
3. Step 3: Cross multiply
   12,260.89x = 16,919.86 × 7,225.32
4. Step 4: Simplify right side
   12,260.89x = 122,251,402.86
5. Step 5: Solve for x
   x = 122,251,402.86/12,260.89
6. Step 6: Final answer
   x = 9,970.84