Finding the Fourth Proportional to 11,630.89, 17,439.72 and 7,937.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,630.89 : 17,439.72 = 7,937.60 : x
2. Step 2: Convert to fraction form
   11,630.89/17,439.72 = 7,937.60/x
3. Step 3: Cross multiply
   11,630.89x = 17,439.72 × 7,937.60
4. Step 4: Simplify right side
   11,630.89x = 138,429,404.51
5. Step 5: Solve for x
   x = 138,429,404.51/11,630.89
6. Step 6: Final answer
   x = 11,901.87