Finding the Fourth Proportional to 9,987.72, 14,981.46 and 2,591.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.72 : 14,981.46 = 2,591.52 : x
2. Step 2: Convert to fraction form
   9,987.72/14,981.46 = 2,591.52/x
3. Step 3: Cross multiply
   9,987.72x = 14,981.46 × 2,591.52
4. Step 4: Simplify right side
   9,987.72x = 38,824,753.22
5. Step 5: Solve for x
   x = 38,824,753.22/9,987.72
6. Step 6: Final answer
   x = 3,887.25