Finding the Fourth Proportional to 12,196.35, 16,830.09 and 7,160.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.35 : 16,830.09 = 7,160.79 : x
2. Step 2: Convert to fraction form
   12,196.35/16,830.09 = 7,160.79/x
3. Step 3: Cross multiply
   12,196.35x = 16,830.09 × 7,160.79
4. Step 4: Simplify right side
   12,196.35x = 120,516,740.17
5. Step 5: Solve for x
   x = 120,516,740.17/12,196.35
6. Step 6: Final answer
   x = 9,881.38