Finding the Fourth Proportional to 15,748.59, 23,609.48 and 6,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,748.59 : 23,609.48 = 6,978.72 : x
2. Step 2: Convert to fraction form
   15,748.59/23,609.48 = 6,978.72/x
3. Step 3: Cross multiply
   15,748.59x = 23,609.48 × 6,978.72
4. Step 4: Simplify right side
   15,748.59x = 164,763,915.37
5. Step 5: Solve for x
   x = 164,763,915.37/15,748.59
6. Step 6: Final answer
   x = 10,462.14