Finding the Fourth Proportional to 12,126.59, 18,196.70 and 4,731.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,126.59 : 18,196.70 = 4,731.56 : x
2. Step 2: Convert to fraction form
   12,126.59/18,196.70 = 4,731.56/x
3. Step 3: Cross multiply
   12,126.59x = 18,196.70 × 4,731.56
4. Step 4: Simplify right side
   12,126.59x = 86,098,663.21
5. Step 5: Solve for x
   x = 86,098,663.21/12,126.59
6. Step 6: Final answer
   x = 7,099.99