Finding the Fourth Proportional to 8,513.16, 11,748.33 and 4,978.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.16 : 11,748.33 = 4,978.43 : x
2. Step 2: Convert to fraction form
   8,513.16/11,748.33 = 4,978.43/x
3. Step 3: Cross multiply
   8,513.16x = 11,748.33 × 4,978.43
4. Step 4: Simplify right side
   8,513.16x = 58,488,238.52
5. Step 5: Solve for x
   x = 58,488,238.52/8,513.16
6. Step 6: Final answer
   x = 6,870.33