Finding the Fourth Proportional to 12,812.34, 17,681.12 and 7,435.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,812.34 : 17,681.12 = 7,435.86 : x
2. Step 2: Convert to fraction form
   12,812.34/17,681.12 = 7,435.86/x
3. Step 3: Cross multiply
   12,812.34x = 17,681.12 × 7,435.86
4. Step 4: Simplify right side
   12,812.34x = 131,474,332.96
5. Step 5: Solve for x
   x = 131,474,332.96/12,812.34
6. Step 6: Final answer
   x = 10,261.54