Finding the Fourth Proportional to 14,071.52, 21,083.86 and 9,902.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,071.52 : 21,083.86 = 9,902.79 : x
2. Step 2: Convert to fraction form
   14,071.52/21,083.86 = 9,902.79/x
3. Step 3: Cross multiply
   14,071.52x = 21,083.86 × 9,902.79
4. Step 4: Simplify right side
   14,071.52x = 208,789,050.35
5. Step 5: Solve for x
   x = 208,789,050.35/14,071.52
6. Step 6: Final answer
   x = 14,837.70