Finding the Fourth Proportional to 8,426.79, 12,630.56 and 5,132.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,426.79 : 12,630.56 = 5,132.58 : x
2. Step 2: Convert to fraction form
   8,426.79/12,630.56 = 5,132.58/x
3. Step 3: Cross multiply
   8,426.79x = 12,630.56 × 5,132.58
4. Step 4: Simplify right side
   8,426.79x = 64,827,333.98
5. Step 5: Solve for x
   x = 64,827,333.98/8,426.79
6. Step 6: Final answer
   x = 7,693.00