Finding the Fourth Proportional to 12,715.78, 17,547.99 and 7,050.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.78 : 17,547.99 = 7,050.77 : x
2. Step 2: Convert to fraction form
   12,715.78/17,547.99 = 7,050.77/x
3. Step 3: Cross multiply
   12,715.78x = 17,547.99 × 7,050.77
4. Step 4: Simplify right side
   12,715.78x = 123,726,819.52
5. Step 5: Solve for x
   x = 123,726,819.52/12,715.78
6. Step 6: Final answer
   x = 9,730.18