Finding the Fourth Proportional to 11,730.18, 17,607.42 and 7,861.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,730.18 : 17,607.42 = 7,861.62 : x
2. Step 2: Convert to fraction form
   11,730.18/17,607.42 = 7,861.62/x
3. Step 3: Cross multiply
   11,730.18x = 17,607.42 × 7,861.62
4. Step 4: Simplify right side
   11,730.18x = 138,422,845.22
5. Step 5: Solve for x
   x = 138,422,845.22/11,730.18
6. Step 6: Final answer
   x = 11,800.57