Finding the Fourth Proportional to 17,100.18, 25,633.88 and 5,405.21

Step by Step Solution

1. Step 1: Write the proportion equation
   17,100.18 : 25,633.88 = 5,405.21 : x
2. Step 2: Convert to fraction form
   17,100.18/25,633.88 = 5,405.21/x
3. Step 3: Cross multiply
   17,100.18x = 25,633.88 × 5,405.21
4. Step 4: Simplify right side
   17,100.18x = 138,556,349.32
5. Step 5: Solve for x
   x = 138,556,349.32/17,100.18
6. Step 6: Final answer
   x = 8,102.63