Finding the Fourth Proportional to 12,889.50, 17,790.03 and 7,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,889.50 : 17,790.03 = 7,300.50 : x
2. Step 2: Convert to fraction form
   12,889.50/17,790.03 = 7,300.50/x
3. Step 3: Cross multiply
   12,889.50x = 17,790.03 × 7,300.50
4. Step 4: Simplify right side
   12,889.50x = 129,876,114.02
5. Step 5: Solve for x
   x = 129,876,114.02/12,889.50
6. Step 6: Final answer
   x = 10,076.12