Finding the Fourth Proportional to 12,370,155.46, 18,555,816.39 and 10,207,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,370,155.46 : 18,555,816.39 = 10,207,168.72 : x
2. Step 2: Convert to fraction form
   12,370,155.46/18,555,816.39 = 10,207,168.72/x
3. Step 3: Cross multiply
   12,370,155.46x = 18,555,816.39 × 10,207,168.72
4. Step 4: Simplify right side
   12,370,155.46x = 189,402,348,630,071.34
5. Step 5: Solve for x
   x = 189,402,348,630,071.34/12,370,155.46
6. Step 6: Final answer
   x = 15,311,234.30