Finding the Fourth Proportional to 16,720.96, 25,068.48 and 7,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,720.96 : 25,068.48 = 7,942.72 : x
2. Step 2: Convert to fraction form
   16,720.96/25,068.48 = 7,942.72/x
3. Step 3: Cross multiply
   16,720.96x = 25,068.48 × 7,942.72
4. Step 4: Simplify right side
   16,720.96x = 199,111,917.47
5. Step 5: Solve for x
   x = 199,111,917.47/16,720.96
6. Step 6: Final answer
   x = 11,907.92