Finding the Fourth Proportional to 15,300.50, 21,114.12 and 8,927.21

Step by Step Solution

1. Step 1: Write the proportion equation
   15,300.50 : 21,114.12 = 8,927.21 : x
2. Step 2: Convert to fraction form
   15,300.50/21,114.12 = 8,927.21/x
3. Step 3: Cross multiply
   15,300.50x = 21,114.12 × 8,927.21
4. Step 4: Simplify right side
   15,300.50x = 188,490,219.25
5. Step 5: Solve for x
   x = 188,490,219.25/15,300.50
6. Step 6: Final answer
   x = 12,319.22