Finding the Fourth Proportional to 10,780.02, 14,876.26 and 5,999.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,780.02 : 14,876.26 = 5,999.91 : x
2. Step 2: Convert to fraction form
   10,780.02/14,876.26 = 5,999.91/x
3. Step 3: Cross multiply
   10,780.02x = 14,876.26 × 5,999.91
4. Step 4: Simplify right side
   10,780.02x = 89,256,150.35
5. Step 5: Solve for x
   x = 89,256,150.35/10,780.02
6. Step 6: Final answer
   x = 8,279.78