Finding the Fourth Proportional to 15,404,680.80, 21,259,123.68 and 8,529,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,404,680.80 : 21,259,123.68 = 8,529,162.72 : x
2. Step 2: Convert to fraction form
   15,404,680.80/21,259,123.68 = 8,529,162.72/x
3. Step 3: Cross multiply
   15,404,680.80x = 21,259,123.68 × 8,529,162.72
4. Step 4: Simplify right side
   15,404,680.80x = 181,322,525,151,325.22
5. Step 5: Solve for x
   x = 181,322,525,151,325.22/15,404,680.80
6. Step 6: Final answer
   x = 11,770,612.29