Finding the Fourth Proportional to 12,090.83, 18,116.80 and 10,146.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.83 : 18,116.80 = 10,146.83 : x
2. Step 2: Convert to fraction form
   12,090.83/18,116.80 = 10,146.83/x
3. Step 3: Cross multiply
   12,090.83x = 18,116.80 × 10,146.83
4. Step 4: Simplify right side
   12,090.83x = 183,827,973.79
5. Step 5: Solve for x
   x = 183,827,973.79/12,090.83
6. Step 6: Final answer
   x = 15,203.92