Finding the Fourth Proportional to 12,877.99, 17,772.92 and 7,842.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,877.99 : 17,772.92 = 7,842.52 : x
2. Step 2: Convert to fraction form
   12,877.99/17,772.92 = 7,842.52/x
3. Step 3: Cross multiply
   12,877.99x = 17,772.92 × 7,842.52
4. Step 4: Simplify right side
   12,877.99x = 139,384,492.97
5. Step 5: Solve for x
   x = 139,384,492.97/12,877.99
6. Step 6: Final answer
   x = 10,823.47