Finding the Fourth Proportional to 8,429.01, 12,612.20 and 5,294.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.01 : 12,612.20 = 5,294.34 : x
2. Step 2: Convert to fraction form
   8,429.01/12,612.20 = 5,294.34/x
3. Step 3: Cross multiply
   8,429.01x = 12,612.20 × 5,294.34
4. Step 4: Simplify right side
   8,429.01x = 66,773,248.48
5. Step 5: Solve for x
   x = 66,773,248.48/8,429.01
6. Step 6: Final answer
   x = 7,921.84