Finding the Fourth Proportional to 21,547.35, 29,734.71 and 13,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,547.35 : 29,734.71 = 13,054.50 : x
2. Step 2: Convert to fraction form
   21,547.35/29,734.71 = 13,054.50/x
3. Step 3: Cross multiply
   21,547.35x = 29,734.71 × 13,054.50
4. Step 4: Simplify right side
   21,547.35x = 388,171,771.70
5. Step 5: Solve for x
   x = 388,171,771.70/21,547.35
6. Step 6: Final answer
   x = 18,014.83