Finding the Fourth Proportional to 51,526.42, 77,300.69 and 15,987

Step by Step Solution

1. Step 1: Write the proportion equation
   51,526.42 : 77,300.69 = 15,987 : x
2. Step 2: Convert to fraction form
   51,526.42/77,300.69 = 15,987/x
3. Step 3: Cross multiply
   51,526.42x = 77,300.69 × 15,987
4. Step 4: Simplify right side
   51,526.42x = 1,235,806,131.03
5. Step 5: Solve for x
   x = 1,235,806,131.03/51,526.42
6. Step 6: Final answer
   x = 23,983.93