Finding the Fourth Proportional to 12,319.63, 18,488.35 and 4,926.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,319.63 : 18,488.35 = 4,926.15 : x
2. Step 2: Convert to fraction form
   12,319.63/18,488.35 = 4,926.15/x
3. Step 3: Cross multiply
   12,319.63x = 18,488.35 × 4,926.15
4. Step 4: Simplify right side
   12,319.63x = 91,076,391.51
5. Step 5: Solve for x
   x = 91,076,391.51/12,319.63
6. Step 6: Final answer
   x = 7,392.79