Finding the Fourth Proportional to 21,536,612.64, 32,297,928.72 and 7,155,818.40

Step by Step Solution

1. Step 1: Write the proportion equation
   21,536,612.64 : 32,297,928.72 = 7,155,818.40 : x
2. Step 2: Convert to fraction form
   21,536,612.64/32,297,928.72 = 7,155,818.40/x
3. Step 3: Cross multiply
   21,536,612.64x = 32,297,928.72 × 7,155,818.40
4. Step 4: Simplify right side
   21,536,612.64x = 231,118,112,616,464.44
5. Step 5: Solve for x
   x = 231,118,112,616,464.44/21,536,612.64
6. Step 6: Final answer
   x = 10,731,405.00