Finding the Fourth Proportional to 11,112.17, 16,664.78 and 3,714.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,112.17 : 16,664.78 = 3,714.91 : x
2. Step 2: Convert to fraction form
   11,112.17/16,664.78 = 3,714.91/x
3. Step 3: Cross multiply
   11,112.17x = 16,664.78 × 3,714.91
4. Step 4: Simplify right side
   11,112.17x = 61,908,074.55
5. Step 5: Solve for x
   x = 61,908,074.55/11,112.17
6. Step 6: Final answer
   x = 5,571.20