Finding the Fourth Proportional to 9,940.52, 14,890.88 and 5,989.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,940.52 : 14,890.88 = 5,989.58 : x
2. Step 2: Convert to fraction form
   9,940.52/14,890.88 = 5,989.58/x
3. Step 3: Cross multiply
   9,940.52x = 14,890.88 × 5,989.58
4. Step 4: Simplify right side
   9,940.52x = 89,190,012.63
5. Step 5: Solve for x
   x = 89,190,012.63/9,940.52
6. Step 6: Final answer
   x = 8,972.37