Finding the Fourth Proportional to 11,714.06, 17,575.34 and 5,142.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,714.06 : 17,575.34 = 5,142.12 : x
2. Step 2: Convert to fraction form
   11,714.06/17,575.34 = 5,142.12/x
3. Step 3: Cross multiply
   11,714.06x = 17,575.34 × 5,142.12
4. Step 4: Simplify right side
   11,714.06x = 90,374,481.61
5. Step 5: Solve for x
   x = 90,374,481.61/11,714.06
6. Step 6: Final answer
   x = 7,715.05