Finding the Fourth Proportional to 22,276.10, 30,741.52 and 12,715.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,276.10 : 30,741.52 = 12,715.80 : x
2. Step 2: Convert to fraction form
   22,276.10/30,741.52 = 12,715.80/x
3. Step 3: Cross multiply
   22,276.10x = 30,741.52 × 12,715.80
4. Step 4: Simplify right side
   22,276.10x = 390,903,020.02
5. Step 5: Solve for x
   x = 390,903,020.02/22,276.10
6. Step 6: Final answer
   x = 17,548.09