Finding the Fourth Proportional to 12,898.50, 17,799.93 and 7,309.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898.50 : 17,799.93 = 7,309.50 : x
2. Step 2: Convert to fraction form
   12,898.50/17,799.93 = 7,309.50/x
3. Step 3: Cross multiply
   12,898.50x = 17,799.93 × 7,309.50
4. Step 4: Simplify right side
   12,898.50x = 130,108,588.34
5. Step 5: Solve for x
   x = 130,108,588.34/12,898.50
6. Step 6: Final answer
   x = 10,087.11