Finding the Fourth Proportional to 12,910.54, 19,374.00 and 5,515.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.54 : 19,374.00 = 5,515.05 : x
2. Step 2: Convert to fraction form
   12,910.54/19,374.00 = 5,515.05/x
3. Step 3: Cross multiply
   12,910.54x = 19,374.00 × 5,515.05
4. Step 4: Simplify right side
   12,910.54x = 106,848,661.69
5. Step 5: Solve for x
   x = 106,848,661.69/12,910.54
6. Step 6: Final answer
   x = 8,276.08