Finding the Fourth Proportional to 9,906.09, 13,670.33 and 5,714.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,906.09 : 13,670.33 = 5,714.25 : x
2. Step 2: Convert to fraction form
   9,906.09/13,670.33 = 5,714.25/x
3. Step 3: Cross multiply
   9,906.09x = 13,670.33 × 5,714.25
4. Step 4: Simplify right side
   9,906.09x = 78,115,654.63
5. Step 5: Solve for x
   x = 78,115,654.63/9,906.09
6. Step 6: Final answer
   x = 7,885.62