Finding the Fourth Proportional to 12,776,905.41, 17,629,434.86 and 8,129,012.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776,905.41 : 17,629,434.86 = 8,129,012.01 : x
2. Step 2: Convert to fraction form
   12,776,905.41/17,629,434.86 = 8,129,012.01/x
3. Step 3: Cross multiply
   12,776,905.41x = 17,629,434.86 × 8,129,012.01
4. Step 4: Simplify right side
   12,776,905.41x = 143,309,887,665,807.59
5. Step 5: Solve for x
   x = 143,309,887,665,807.59/12,776,905.41
6. Step 6: Final answer
   x = 11,216,322.19