Finding the Fourth Proportional to 13,389.32, 20,070.04 and 4,498.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,389.32 : 20,070.04 = 4,498.05 : x
2. Step 2: Convert to fraction form
   13,389.32/20,070.04 = 4,498.05/x
3. Step 3: Cross multiply
   13,389.32x = 20,070.04 × 4,498.05
4. Step 4: Simplify right side
   13,389.32x = 90,275,956.91
5. Step 5: Solve for x
   x = 90,275,956.91/13,389.32
6. Step 6: Final answer
   x = 6,742.39