Finding the Fourth Proportional to 9,989,511.66, 14,978,199.77 and 3,916,967.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989,511.66 : 14,978,199.77 = 3,916,967.99 : x
2. Step 2: Convert to fraction form
   9,989,511.66/14,978,199.77 = 3,916,967.99/x
3. Step 3: Cross multiply
   9,989,511.66x = 14,978,199.77 × 3,916,967.99
4. Step 4: Simplify right side
   9,989,511.66x = 58,669,128,952,439.52
5. Step 5: Solve for x
   x = 58,669,128,952,439.52/9,989,511.66
6. Step 6: Final answer
   x = 5,873,072.77