Finding the Fourth Proportional to 11,111.17, 16,663.86 and 4,447.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.17 : 16,663.86 = 4,447.37 : x
2. Step 2: Convert to fraction form
   11,111.17/16,663.86 = 4,447.37/x
3. Step 3: Cross multiply
   11,111.17x = 16,663.86 × 4,447.37
4. Step 4: Simplify right side
   11,111.17x = 74,110,328.81
5. Step 5: Solve for x
   x = 74,110,328.81/11,111.17
6. Step 6: Final answer
   x = 6,669.89