Finding the Fourth Proportional to 10,287.48, 15,419.55 and 4,729.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.48 : 15,419.55 = 4,729.34 : x
2. Step 2: Convert to fraction form
   10,287.48/15,419.55 = 4,729.34/x
3. Step 3: Cross multiply
   10,287.48x = 15,419.55 × 4,729.34
4. Step 4: Simplify right side
   10,287.48x = 72,924,294.60
5. Step 5: Solve for x
   x = 72,924,294.60/10,287.48
6. Step 6: Final answer
   x = 7,088.65