Finding the Fourth Proportional to 11,109.06, 16,666.56 and 4,869.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,109.06 : 16,666.56 = 4,869.60 : x
2. Step 2: Convert to fraction form
   11,109.06/16,666.56 = 4,869.60/x
3. Step 3: Cross multiply
   11,109.06x = 16,666.56 × 4,869.60
4. Step 4: Simplify right side
   11,109.06x = 81,159,480.58
5. Step 5: Solve for x
   x = 81,159,480.58/11,109.06
6. Step 6: Final answer
   x = 7,305.70