Finding the Fourth Proportional to 14,111.86, 21,177.51 and 4,877.86

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.86 : 21,177.51 = 4,877.86 : x
2. Step 2: Convert to fraction form
   14,111.86/21,177.51 = 4,877.86/x
3. Step 3: Cross multiply
   14,111.86x = 21,177.51 × 4,877.86
4. Step 4: Simplify right side
   14,111.86x = 103,300,798.65
5. Step 5: Solve for x
   x = 103,300,798.65/14,111.86
6. Step 6: Final answer
   x = 7,320.14