Finding the Fourth Proportional to 13,245,085.86, 18,276,574.56 and 7,664,290.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,245,085.86 : 18,276,574.56 = 7,664,290.76 : x
2. Step 2: Convert to fraction form
   13,245,085.86/18,276,574.56 = 7,664,290.76/x
3. Step 3: Cross multiply
   13,245,085.86x = 18,276,574.56 × 7,664,290.76
4. Step 4: Simplify right side
   13,245,085.86x = 140,076,981,433,276.19
5. Step 5: Solve for x
   x = 140,076,981,433,276.19/13,245,085.86
6. Step 6: Final answer
   x = 10,575,769.98