Finding the Fourth Proportional to 12,071.63, 18,105.90 and 4,671.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.63 : 18,105.90 = 4,671.02 : x
2. Step 2: Convert to fraction form
   12,071.63/18,105.90 = 4,671.02/x
3. Step 3: Cross multiply
   12,071.63x = 18,105.90 × 4,671.02
4. Step 4: Simplify right side
   12,071.63x = 84,573,075.04
5. Step 5: Solve for x
   x = 84,573,075.04/12,071.63
6. Step 6: Final answer
   x = 7,005.94