Finding the Fourth Proportional to 10,671.21, 16,002.71 and 7,374.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,671.21 : 16,002.71 = 7,374.31 : x
2. Step 2: Convert to fraction form
   10,671.21/16,002.71 = 7,374.31/x
3. Step 3: Cross multiply
   10,671.21x = 16,002.71 × 7,374.31
4. Step 4: Simplify right side
   10,671.21x = 118,008,922.81
5. Step 5: Solve for x
   x = 118,008,922.81/10,671.21
6. Step 6: Final answer
   x = 11,058.63