Finding the Fourth Proportional to 12,876.42, 17,767.99 and 7,210.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.42 : 17,767.99 = 7,210.38 : x
2. Step 2: Convert to fraction form
   12,876.42/17,767.99 = 7,210.38/x
3. Step 3: Cross multiply
   12,876.42x = 17,767.99 × 7,210.38
4. Step 4: Simplify right side
   12,876.42x = 128,113,968.75
5. Step 5: Solve for x
   x = 128,113,968.75/12,876.42
6. Step 6: Final answer
   x = 9,949.50