Finding the Fourth Proportional to 7,312.01, 10,090.63 and 4,168.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,312.01 : 10,090.63 = 4,168.40 : x
2. Step 2: Convert to fraction form
   7,312.01/10,090.63 = 4,168.40/x
3. Step 3: Cross multiply
   7,312.01x = 10,090.63 × 4,168.40
4. Step 4: Simplify right side
   7,312.01x = 42,061,721.22
5. Step 5: Solve for x
   x = 42,061,721.22/7,312.01
6. Step 6: Final answer
   x = 5,752.42