Finding the Fourth Proportional to 4,915.47, 7,317.61 and 4,886.29

Step by Step Solution

1. Step 1: Write the proportion equation
   4,915.47 : 7,317.61 = 4,886.29 : x
2. Step 2: Convert to fraction form
   4,915.47/7,317.61 = 4,886.29/x
3. Step 3: Cross multiply
   4,915.47x = 7,317.61 × 4,886.29
4. Step 4: Simplify right side
   4,915.47x = 35,755,964.57
5. Step 5: Solve for x
   x = 35,755,964.57/4,915.47
6. Step 6: Final answer
   x = 7,274.17