Finding the Fourth Proportional to 10,116.51, 14,017.35 and 9,886.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,116.51 : 14,017.35 = 9,886.86 : x
2. Step 2: Convert to fraction form
   10,116.51/14,017.35 = 9,886.86/x
3. Step 3: Cross multiply
   10,116.51x = 14,017.35 × 9,886.86
4. Step 4: Simplify right side
   10,116.51x = 138,587,577.02
5. Step 5: Solve for x
   x = 138,587,577.02/10,116.51
6. Step 6: Final answer
   x = 13,699.15