Finding the Fourth Proportional to 8,747.81, 12,071.53 and 4,970.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.81 : 12,071.53 = 4,970.47 : x
2. Step 2: Convert to fraction form
   8,747.81/12,071.53 = 4,970.47/x
3. Step 3: Cross multiply
   8,747.81x = 12,071.53 × 4,970.47
4. Step 4: Simplify right side
   8,747.81x = 60,001,177.72
5. Step 5: Solve for x
   x = 60,001,177.72/8,747.81
6. Step 6: Final answer
   x = 6,858.99