Finding the Fourth Proportional to 12,927.89, 19,390.75 and 5,134.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,927.89 : 19,390.75 = 5,134.61 : x
2. Step 2: Convert to fraction form
   12,927.89/19,390.75 = 5,134.61/x
3. Step 3: Cross multiply
   12,927.89x = 19,390.75 × 5,134.61
4. Step 4: Simplify right side
   12,927.89x = 99,563,938.86
5. Step 5: Solve for x
   x = 99,563,938.86/12,927.89
6. Step 6: Final answer
   x = 7,701.48