Finding the Fourth Proportional to 14,061.65, 21,091.91 and 7,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,061.65 : 21,091.91 = 7,817.72 : x
2. Step 2: Convert to fraction form
   14,061.65/21,091.91 = 7,817.72/x
3. Step 3: Cross multiply
   14,061.65x = 21,091.91 × 7,817.72
4. Step 4: Simplify right side
   14,061.65x = 164,890,502.10
5. Step 5: Solve for x
   x = 164,890,502.10/14,061.65
6. Step 6: Final answer
   x = 11,726.26