Finding the Fourth Proportional to 19,623,142.86, 27,056,763.60 and 13,431,178.86

Step by Step Solution

1. Step 1: Write the proportion equation
   19,623,142.86 : 27,056,763.60 = 13,431,178.86 : x
2. Step 2: Convert to fraction form
   19,623,142.86/27,056,763.60 = 13,431,178.86/x
3. Step 3: Cross multiply
   19,623,142.86x = 27,056,763.60 × 13,431,178.86
4. Step 4: Simplify right side
   19,623,142.86x = 363,404,231,284,337.50
5. Step 5: Solve for x
   x = 363,404,231,284,337.50/19,623,142.86
6. Step 6: Final answer
   x = 18,519,165.55