Finding the Fourth Proportional to 12,910.56, 19,380.42 and 5,124.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.56 : 19,380.42 = 5,124.84 : x
2. Step 2: Convert to fraction form
   12,910.56/19,380.42 = 5,124.84/x
3. Step 3: Cross multiply
   12,910.56x = 19,380.42 × 5,124.84
4. Step 4: Simplify right side
   12,910.56x = 99,321,551.63
5. Step 5: Solve for x
   x = 99,321,551.63/12,910.56
6. Step 6: Final answer
   x = 7,693.05