Finding the Fourth Proportional to 12,913.50, 17,817.88 and 7,606.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913.50 : 17,817.88 = 7,606.38 : x
2. Step 2: Convert to fraction form
   12,913.50/17,817.88 = 7,606.38/x
3. Step 3: Cross multiply
   12,913.50x = 17,817.88 × 7,606.38
4. Step 4: Simplify right side
   12,913.50x = 135,529,566.07
5. Step 5: Solve for x
   x = 135,529,566.07/12,913.50
6. Step 6: Final answer
   x = 10,495.18