Finding the Fourth Proportional to 12,931,142.12, 19,374,763.42 and 7,802,796.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931,142.12 : 19,374,763.42 = 7,802,796.60 : x
2. Step 2: Convert to fraction form
   12,931,142.12/19,374,763.42 = 7,802,796.60/x
3. Step 3: Cross multiply
   12,931,142.12x = 19,374,763.42 × 7,802,796.60
4. Step 4: Simplify right side
   12,931,142.12x = 151,177,338,139,380.38
5. Step 5: Solve for x
   x = 151,177,338,139,380.38/12,931,142.12
6. Step 6: Final answer
   x = 11,690,950.17