Finding the Fourth Proportional to 12,085.86, 18,120.93 and 5,070.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.86 : 18,120.93 = 5,070.37 : x
2. Step 2: Convert to fraction form
   12,085.86/18,120.93 = 5,070.37/x
3. Step 3: Cross multiply
   12,085.86x = 18,120.93 × 5,070.37
4. Step 4: Simplify right side
   12,085.86x = 91,879,819.84
5. Step 5: Solve for x
   x = 91,879,819.84/12,085.86
6. Step 6: Final answer
   x = 7,602.26