Finding the Fourth Proportional to 10,503.12, 14,494.24 and 5,787.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,503.12 : 14,494.24 = 5,787.40 : x
2. Step 2: Convert to fraction form
   10,503.12/14,494.24 = 5,787.40/x
3. Step 3: Cross multiply
   10,503.12x = 14,494.24 × 5,787.40
4. Step 4: Simplify right side
   10,503.12x = 83,883,964.58
5. Step 5: Solve for x
   x = 83,883,964.58/10,503.12
6. Step 6: Final answer
   x = 7,986.58