Finding the Fourth Proportional to 12,992.84, 17,925.89 and 7,951.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.84 : 17,925.89 = 7,951.80 : x
2. Step 2: Convert to fraction form
   12,992.84/17,925.89 = 7,951.80/x
3. Step 3: Cross multiply
   12,992.84x = 17,925.89 × 7,951.80
4. Step 4: Simplify right side
   12,992.84x = 142,543,092.10
5. Step 5: Solve for x
   x = 142,543,092.10/12,992.84
6. Step 6: Final answer
   x = 10,970.90