Finding the Fourth Proportional to 12,926.89, 19,389.25 and 5,133.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.89 : 19,389.25 = 5,133.61 : x
2. Step 2: Convert to fraction form
   12,926.89/19,389.25 = 5,133.61/x
3. Step 3: Cross multiply
   12,926.89x = 19,389.25 × 5,133.61
4. Step 4: Simplify right side
   12,926.89x = 99,536,847.69
5. Step 5: Solve for x
   x = 99,536,847.69/12,926.89
6. Step 6: Final answer
   x = 7,699.98