Finding the Fourth Proportional to 6,111.31, 8,432.54 and 3,754.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.31 : 8,432.54 = 3,754.21 : x
2. Step 2: Convert to fraction form
   6,111.31/8,432.54 = 3,754.21/x
3. Step 3: Cross multiply
   6,111.31x = 8,432.54 × 3,754.21
4. Step 4: Simplify right side
   6,111.31x = 31,657,507.22
5. Step 5: Solve for x
   x = 31,657,507.22/6,111.31
6. Step 6: Final answer
   x = 5,180.15