Finding the Fourth Proportional to 17,743.64, 26,611.76 and 5,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,743.64 : 26,611.76 = 5,260.72 : x
2. Step 2: Convert to fraction form
   17,743.64/26,611.76 = 5,260.72/x
3. Step 3: Cross multiply
   17,743.64x = 26,611.76 × 5,260.72
4. Step 4: Simplify right side
   17,743.64x = 139,997,018.07
5. Step 5: Solve for x
   x = 139,997,018.07/17,743.64
6. Step 6: Final answer
   x = 7,889.98