Finding the Fourth Proportional to 13,300.81, 19,951.82 and 4,978.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.81 : 19,951.82 = 4,978.67 : x
2. Step 2: Convert to fraction form
   13,300.81/19,951.82 = 4,978.67/x
3. Step 3: Cross multiply
   13,300.81x = 19,951.82 × 4,978.67
4. Step 4: Simplify right side
   13,300.81x = 99,333,403.03
5. Step 5: Solve for x
   x = 99,333,403.03/13,300.81
6. Step 6: Final answer
   x = 7,468.22