Finding the Fourth Proportional to 16,916,605.55, 23,387,609.07 and 12,499,364.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,916,605.55 : 23,387,609.07 = 12,499,364.22 : x
2. Step 2: Convert to fraction form
   16,916,605.55/23,387,609.07 = 12,499,364.22/x
3. Step 3: Cross multiply
   16,916,605.55x = 23,387,609.07 × 12,499,364.22
4. Step 4: Simplify right side
   16,916,605.55x = 292,330,244,000,905.50
5. Step 5: Solve for x
   x = 292,330,244,000,905.50/16,916,605.55
6. Step 6: Final answer
   x = 17,280,667.99