Finding the Fourth Proportional to 6,513, 8,987.94 and 3,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,513 : 8,987.94 = 3,718.50 : x
2. Step 2: Convert to fraction form
   6,513/8,987.94 = 3,718.50/x
3. Step 3: Cross multiply
   6,513x = 8,987.94 × 3,718.50
4. Step 4: Simplify right side
   6,513x = 33,421,654.89
5. Step 5: Solve for x
   x = 33,421,654.89/6,513
6. Step 6: Final answer
   x = 5,131.53