Finding the Fourth Proportional to 17,100.84, 25,646.22 and 7,239.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,100.84 : 25,646.22 = 7,239.90 : x
2. Step 2: Convert to fraction form
   17,100.84/25,646.22 = 7,239.90/x
3. Step 3: Cross multiply
   17,100.84x = 25,646.22 × 7,239.90
4. Step 4: Simplify right side
   17,100.84x = 185,676,068.18
5. Step 5: Solve for x
   x = 185,676,068.18/17,100.84
6. Step 6: Final answer
   x = 10,857.72