Finding the Fourth Proportional to 17,458, 26,191.80 and 5,146

Step by Step Solution

1. Step 1: Write the proportion equation
   17,458 : 26,191.80 = 5,146 : x
2. Step 2: Convert to fraction form
   17,458/26,191.80 = 5,146/x
3. Step 3: Cross multiply
   17,458x = 26,191.80 × 5,146
4. Step 4: Simplify right side
   17,458x = 134,783,002.80
5. Step 5: Solve for x
   x = 134,783,002.80/17,458
6. Step 6: Final answer
   x = 7,720.41