Finding the Fourth Proportional to 12,090.88, 18,139.47 and 4,594.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.88 : 18,139.47 = 4,594.59 : x
2. Step 2: Convert to fraction form
   12,090.88/18,139.47 = 4,594.59/x
3. Step 3: Cross multiply
   12,090.88x = 18,139.47 × 4,594.59
4. Step 4: Simplify right side
   12,090.88x = 83,343,336.77
5. Step 5: Solve for x
   x = 83,343,336.77/12,090.88
6. Step 6: Final answer
   x = 6,893.07