Finding the Fourth Proportional to 19,086.98, 26,312.18 and 13,404.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,086.98 : 26,312.18 = 13,404.69 : x
2. Step 2: Convert to fraction form
   19,086.98/26,312.18 = 13,404.69/x
3. Step 3: Cross multiply
   19,086.98x = 26,312.18 × 13,404.69
4. Step 4: Simplify right side
   19,086.98x = 352,706,549.10
5. Step 5: Solve for x
   x = 352,706,549.10/19,086.98
6. Step 6: Final answer
   x = 18,478.91