Finding the Fourth Proportional to 12,296,584.72, 16,970,783.06 and 7,139,946.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,296,584.72 : 16,970,783.06 = 7,139,946.25 : x
2. Step 2: Convert to fraction form
   12,296,584.72/16,970,783.06 = 7,139,946.25/x
3. Step 3: Cross multiply
   12,296,584.72x = 16,970,783.06 × 7,139,946.25
4. Step 4: Simplify right side
   12,296,584.72x = 121,170,478,748,256.88
5. Step 5: Solve for x
   x = 121,170,478,748,256.88/12,296,584.72
6. Step 6: Final answer
   x = 9,853,994.55