Finding the Fourth Proportional to 10,857.06, 14,977.98 and 8,334.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,857.06 : 14,977.98 = 8,334.72 : x
2. Step 2: Convert to fraction form
   10,857.06/14,977.98 = 8,334.72/x
3. Step 3: Cross multiply
   10,857.06x = 14,977.98 × 8,334.72
4. Step 4: Simplify right side
   10,857.06x = 124,837,269.47
5. Step 5: Solve for x
   x = 124,837,269.47/10,857.06
6. Step 6: Final answer
   x = 11,498.26