Finding the Fourth Proportional to 11,886.31, 16,365.71 and 10,090.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,886.31 : 16,365.71 = 10,090.04 : x
2. Step 2: Convert to fraction form
   11,886.31/16,365.71 = 10,090.04/x
3. Step 3: Cross multiply
   11,886.31x = 16,365.71 × 10,090.04
4. Step 4: Simplify right side
   11,886.31x = 165,130,611.92
5. Step 5: Solve for x
   x = 165,130,611.92/11,886.31
6. Step 6: Final answer
   x = 13,892.50