Finding the Fourth Proportional to 17,671.47, 26,500.73 and 5,188.29

Step by Step Solution

1. Step 1: Write the proportion equation
   17,671.47 : 26,500.73 = 5,188.29 : x
2. Step 2: Convert to fraction form
   17,671.47/26,500.73 = 5,188.29/x
3. Step 3: Cross multiply
   17,671.47x = 26,500.73 × 5,188.29
4. Step 4: Simplify right side
   17,671.47x = 137,493,446.51
5. Step 5: Solve for x
   x = 137,493,446.51/17,671.47
6. Step 6: Final answer
   x = 7,780.53